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<!DOCTYPE html> <html> <head> <title>backbone.js</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link rel="stylesheet" media="all" href="docco.css" /> </head> <body> <div id="container"> <div id="background"></div> <table cellpadding="0" cellspacing="0"> <thead> <tr> <th class="docs"> <h1> backbone.js </h1> </th> <th class="code"> </th> </tr> </thead> <tbody> <tr id="section-1"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-1">&#182;</a> </div> <pre><code>Backbone.js 0.3.2
(c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
Backbone may be freely distributed under the MIT license.
For all details and documentation:
http://documentcloud.github.com/backbone
</code></pre> </td> <td class="code"> <div class="highlight"><pre><span class="p">(</span><span class="kd">function</span><span class="p">(){</span></pre></div> </td> </tr> <tr id="section-2"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-2">&#182;</a> </div> <h2>Initial Setup</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-3"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-3">&#182;</a> </div> <p>The top-level namespace. All public Backbone classes and modules will
be attached to this. Exported for both CommonJS and the browser.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="kd">var</span> <span class="nx">Backbone</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">exports</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">Backbone</span> <span class="o">=</span> <span class="nx">exports</span><span class="p">;</span>
<span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
<span class="nx">Backbone</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">Backbone</span> <span class="o">=</span> <span class="p">{};</span>
<span class="p">}</span></pre></div> </td> </tr> <tr id="section-4"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-4">&#182;</a> </div> <p>Current version of the library. Keep in sync with <code>package.json</code>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Backbone</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;0.3.2&#39;</span><span class="p">;</span></pre></div> </td> </tr> <tr id="section-5"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-5">&#182;</a> </div> <p>Require Underscore, if we're on the server, and it's not already present.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="kd">var</span> <span class="nx">_</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">_</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">_</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">require</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span><span class="p">))</span> <span class="nx">_</span> <span class="o">=</span> <span class="nx">require</span><span class="p">(</span><span class="s2">&quot;underscore&quot;</span><span class="p">).</span><span class="nx">_</span><span class="p">;</span></pre></div> </td> </tr> <tr id="section-6"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-6">&#182;</a> </div> <p>For Backbone's purposes, jQuery owns the <code>$</code> variable.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="kd">var</span> <span class="nx">$</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">jQuery</span><span class="p">;</span></pre></div> </td> </tr> <tr id="section-7"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-7">&#182;</a> </div> <p>Turn on <code>emulateHTTP</code> to use support legacy HTTP servers. Setting this option will
fake <code>"PUT"</code> and <code>"DELETE"</code> requests via the <code>_method</code> parameter and set a
<code>X-Http-Method-Override</code> header.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Backbone</span><span class="p">.</span><span class="nx">emulateHTTP</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span></pre></div> </td> </tr> <tr id="section-8"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-8">&#182;</a> </div> <p>Turn on <code>emulateJSON</code> to support legacy servers that can't deal with direct
<code>application/json</code> requests ... will encode the body as
<code>application/x-www-form-urlencoded</code> instead and will send the model in a
form param named <code>model</code>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Backbone</span><span class="p">.</span><span class="nx">emulateJSON</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span></pre></div> </td> </tr> <tr id="section-9"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-9">&#182;</a> </div> <h2>Backbone.Events</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-10"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-10">&#182;</a> </div> <p>A module that can be mixed in to <em>any object</em> in order to provide it with
custom events. You may <code>bind</code> or <code>unbind</code> a callback function to an event;
<code>trigger</code>-ing an event fires all callbacks in succession.</p>
<pre><code>var object = {};
_.extend(object, Backbone.Events);
object.bind('expand', function(){ alert('expanded'); });
object.trigger('expand');
</code></pre> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Backbone</span><span class="p">.</span><span class="nx">Events</span> <span class="o">=</span> <span class="p">{</span></pre></div> </td> </tr> <tr id="section-11"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-11">&#182;</a> </div> <p>Bind an event, specified by a string name, <code>ev</code>, to a <code>callback</code> function.
Passing <code>"all"</code> will bind the callback to all events fired.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">bind</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">ev</span><span class="p">,</span> <span class="nx">callback</span><span class="p">)</span> <span class="p">{</span>
<span class="kd">var</span> <span class="nx">calls</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">_callbacks</span> <span class="o">||</span> <span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_callbacks</span> <span class="o">=</span> <span class="p">{});</span>
<span class="kd">var</span> <span class="nx">list</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">_callbacks</span><span class="p">[</span><span class="nx">ev</span><span class="p">]</span> <span class="o">||</span> <span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_callbacks</span><span class="p">[</span><span class="nx">ev</span><span class="p">]</span> <span class="o">=</span> <span class="p">[]);</span>
<span class="nx">list</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">callback</span><span class="p">);</span>
<span class="k">return</span> <span class="k">this</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-12"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-12">&#182;</a> </div> <p>Remove one or many callbacks. If <code>callback</code> is null, removes all
callbacks for the event. If <code>ev</code> is null, removes all bound callbacks
for all events.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">unbind</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">ev</span><span class="p">,</span> <span class="nx">callback</span><span class="p">)</span> <span class="p">{</span>
<span class="kd">var</span> <span class="nx">calls</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">ev</span><span class="p">)</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_callbacks</span> <span class="o">=</span> <span class="p">{};</span>
<span class="p">}</span> <span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="nx">calls</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">_callbacks</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">callback</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">calls</span><span class="p">[</span><span class="nx">ev</span><span class="p">]</span> <span class="o">=</span> <span class="p">[];</span>
<span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
<span class="kd">var</span> <span class="nx">list</span> <span class="o">=</span> <span class="nx">calls</span><span class="p">[</span><span class="nx">ev</span><span class="p">];</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">list</span><span class="p">)</span> <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
<span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">l</span> <span class="o">=</span> <span class="nx">list</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">l</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">callback</span> <span class="o">===</span> <span class="nx">list</span><span class="p">[</span><span class="nx">i</span><span class="p">])</span> <span class="p">{</span>
<span class="nx">list</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="nx">i</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
<span class="k">break</span><span class="p">;</span>
<span class="p">}</span>
<span class="p">}</span>
<span class="p">}</span>
<span class="p">}</span>
<span class="k">return</span> <span class="k">this</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-13"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-13">&#182;</a> </div> <p>Trigger an event, firing all bound callbacks. Callbacks are passed the
same arguments as <code>trigger</code> is, apart from the event name.
Listening for <code>"all"</code> passes the true event name as the first argument.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">trigger</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">ev</span><span class="p">)</span> <span class="p">{</span>
<span class="kd">var</span> <span class="nx">list</span><span class="p">,</span> <span class="nx">calls</span><span class="p">,</span> <span class="nx">i</span><span class="p">,</span> <span class="nx">l</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">calls</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">_callbacks</span><span class="p">))</span> <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">list</span> <span class="o">=</span> <span class="nx">calls</span><span class="p">[</span><span class="nx">ev</span><span class="p">])</span> <span class="p">{</span>
<span class="k">for</span> <span class="p">(</span><span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">l</span> <span class="o">=</span> <span class="nx">list</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">l</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">list</span><span class="p">[</span><span class="nx">i</span><span class="p">].</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nb">Array</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">));</span>
<span class="p">}</span>
<span class="p">}</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">list</span> <span class="o">=</span> <span class="nx">calls</span><span class="p">[</span><span class="s1">&#39;all&#39;</span><span class="p">])</span> <span class="p">{</span>
<span class="k">for</span> <span class="p">(</span><span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">l</span> <span class="o">=</span> <span class="nx">list</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">l</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">list</span><span class="p">[</span><span class="nx">i</span><span class="p">].</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
<span class="p">}</span>
<span class="p">}</span>
<span class="k">return</span> <span class="k">this</span><span class="p">;</span>
<span class="p">}</span>
<span class="p">};</span></pre></div> </td> </tr> <tr id="section-14"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-14">&#182;</a> </div> <h2>Backbone.Model</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-15"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-15">&#182;</a> </div> <p>Create a new model, with defined attributes. A client id (<code>cid</code>)
is automatically generated and assigned for you.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Backbone</span><span class="p">.</span><span class="nx">Model</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">attributes</span><span class="p">,</span> <span class="nx">options</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">attributes</span> <span class="o">||</span> <span class="p">(</span><span class="nx">attributes</span> <span class="o">=</span> <span class="p">{});</span>
<span class="k">if</span> <span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">defaults</span><span class="p">)</span> <span class="nx">attributes</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span><span class="p">({},</span> <span class="k">this</span><span class="p">.</span><span class="nx">defaults</span><span class="p">,</span> <span class="nx">attributes</span><span class="p">);</span>
<span class="k">this</span><span class="p">.</span><span class="nx">attributes</span> <span class="o">=</span> <span class="p">{};</span>
<span class="k">this</span><span class="p">.</span><span class="nx">cid</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">uniqueId</span><span class="p">(</span><span class="s1">&#39;c&#39;</span><span class="p">);</span>
<span class="k">this</span><span class="p">.</span><span class="nx">set</span><span class="p">(</span><span class="nx">attributes</span><span class="p">,</span> <span class="p">{</span><span class="nx">silent</span> <span class="o">:</span> <span class="kc">true</span><span class="p">});</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_previousAttributes</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">attributes</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">options</span> <span class="o">&amp;&amp;</span> <span class="nx">options</span><span class="p">.</span><span class="nx">collection</span><span class="p">)</span> <span class="k">this</span><span class="p">.</span><span class="nx">collection</span> <span class="o">=</span> <span class="nx">options</span><span class="p">.</span><span class="nx">collection</span><span class="p">;</span>
<span class="k">this</span><span class="p">.</span><span class="nx">initialize</span><span class="p">(</span><span class="nx">attributes</span><span class="p">,</span> <span class="nx">options</span><span class="p">);</span>
<span class="p">};</span></pre></div> </td> </tr> <tr id="section-16"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-16">&#182;</a> </div> <p>Attach all inheritable methods to the Model prototype.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span><span class="p">(</span><span class="nx">Backbone</span><span class="p">.</span><span class="nx">Model</span><span class="p">.</span><span class="nx">prototype</span><span class="p">,</span> <span class="nx">Backbone</span><span class="p">.</span><span class="nx">Events</span><span class="p">,</span> <span class="p">{</span></pre></div> </td> </tr> <tr id="section-17"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-17">&#182;</a> </div> <p>A snapshot of the model's previous attributes, taken immediately
after the last <code>"change"</code> event was fired.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">_previousAttributes</span> <span class="o">:</span> <span class="kc">null</span><span class="p">,</span></pre></div> </td> </tr> <tr id="section-18"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-18">&#182;</a> </div> <p>Has the item been changed since the last <code>"change"</code> event?</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">_changed</span> <span class="o">:</span> <span class="kc">false</span><span class="p">,</span></pre></div> </td> </tr> <tr id="section-19"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-19">&#182;</a> </div> <p>Initialize is an empty function by default. Override it with your own
initialization logic.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">initialize</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(){},</span></pre></div> </td> </tr> <tr id="section-20"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-20">&#182;</a> </div> <p>Return a copy of the model's <code>attributes</code> object.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">toJSON</span> <span class="o">:</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
<span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">attributes</span><span class="p">);</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-21"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-21">&#182;</a> </div> <p>Get the value of an attribute.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">get</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">attr</span><span class="p">)</span> <span class="p">{</span>
<span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">attributes</span><span class="p">[</span><span class="nx">attr</span><span class="p">];</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-22"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-22">&#182;</a> </div> <p>Set a hash of model attributes on the object, firing <code>"change"</code> unless you
choose to silence it.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">set</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">attrs</span><span class="p">,</span> <span class="nx">options</span><span class="p">)</span> <span class="p">{</span></pre></div> </td> </tr> <tr id="section-23"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-23">&#182;</a> </div> <p>Extract attributes and options.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">options</span> <span class="o">||</span> <span class="p">(</span><span class="nx">options</span> <span class="o">=</span> <span class="p">{});</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">attrs</span><span class="p">)</span> <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">attrs</span><span class="p">.</span><span class="nx">attributes</span><span class="p">)</span> <span class="nx">attrs</span> <span class="o">=</span> <span class="nx">attrs</span><span class="p">.</span><span class="nx">attributes</span><span class="p">;</span>
<span class="kd">var</span> <span class="nx">now</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">attributes</span><span class="p">;</span></pre></div> </td> </tr> <tr id="section-24"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-24">&#182;</a> </div> <p>Run validation.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">options</span><span class="p">.</span><span class="nx">silent</span> <span class="o">&amp;&amp;</span> <span class="k">this</span><span class="p">.</span><span class="nx">validate</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="k">this</span><span class="p">.</span><span class="nx">_performValidation</span><span class="p">(</span><span class="nx">attrs</span><span class="p">,</span> <span class="nx">options</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div> </td> </tr> <tr id="section-25"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-25">&#182;</a> </div> <p>Check for changes of <code>id</code>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="k">if</span> <span class="p">(</span><span class="s1">&#39;id&#39;</span> <span class="k">in</span> <span class="nx">attrs</span><span class="p">)</span> <span class="k">this</span><span class="p">.</span><span class="nx">id</span> <span class="o">=</span> <span class="nx">attrs</span><span class="p">.</span><span class="nx">id</span><span class="p">;</span></pre></div> </td> </tr> <tr id="section-26"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-26">&#182;</a> </div> <p>Update attributes.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">attr</span> <span class="k">in</span> <span class="nx">attrs</span><span class="p">)</span> <span class="p">{</span>
<span class="kd">var</span> <span class="nx">val</span> <span class="o">=</span> <span class="nx">attrs</span><span class="p">[</span><span class="nx">attr</span><span class="p">];</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">now</span><span class="p">[</span><span class="nx">attr</span><span class="p">],</span> <span class="nx">val</span><span class="p">))</span> <span class="p">{</span>
<span class="nx">now</span><span class="p">[</span><span class="nx">attr</span><span class="p">]</span> <span class="o">=</span> <span class="nx">val</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">options</span><span class="p">.</span><span class="nx">silent</span><span class="p">)</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_changed</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
<span class="k">this</span><span class="p">.</span><span class="nx">trigger</span><span class="p">(</span><span class="s1">&#39;change:&#39;</span> <span class="o">+</span> <span class="nx">attr</span><span class="p">,</span> <span class="k">this</span><span class="p">,</span> <span class="nx">val</span><span class="p">);</span>
<span class="p">}</span>
<span class="p">}</span>
<span class="p">}</span></pre></div> </td> </tr> <tr id="section-27"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-27">&#182;</a> </div> <p>Fire the <code>"change"</code> event, if the model has been changed.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">options</span><span class="p">.</span><span class="nx">silent</span> <span class="o">&amp;&amp;</span> <span class="k">this</span><span class="p">.</span><span class="nx">_changed</span><span class="p">)</span> <span class="k">this</span><span class="p">.</span><span class="nx">change</span><span class="p">();</span>
<span class="k">return</span> <span class="k">this</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-28"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-28">&#182;</a> </div> <p>Remove an attribute from the model, firing <code>"change"</code> unless you choose
to silence it.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">unset</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">attr</span><span class="p">,</span> <span class="nx">options</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">options</span> <span class="o">||</span> <span class="p">(</span><span class="nx">options</span> <span class="o">=</span> <span class="p">{});</span>
<span class="kd">var</span> <span class="nx">value</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">attributes</span><span class="p">[</span><span class="nx">attr</span><span class="p">];</span></pre></div> </td> </tr> <tr id="section-29"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-29">&#182;</a> </div> <p>Run validation.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="kd">var</span> <span class="nx">validObj</span> <span class="o">=</span> <span class="p">{};</span>
<span class="nx">validObj</span><span class="p">[</span><span class="nx">attr</span><span class="p">]</span> <span class="o">=</span> <span class="k">void</span> <span class="mi">0</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">options</span><span class="p">.</span><span class="nx">silent</span> <span class="o">&amp;&amp;</span> <span class="k">this</span><span class="p">.</span><span class="nx">validate</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="k">this</span><span class="p">.</span><span class="nx">_performValidation</span><span class="p">(</span><span class="nx">validObj</span><span class="p">,</span> <span class="nx">options</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div> </td> </tr> <tr id="section-30"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-30">&#182;</a> </div> <p>Remove the attribute.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="k">delete</span> <span class="k">this</span><span class="p">.</span><span class="nx">attributes</span><span class="p">[</span><span class="nx">attr</span><span class="p">];</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">options</span><span class="p">.</span><span class="nx">silent</span><span class="p">)</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_changed</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
<span class="k">this</span><span class="p">.</span><span class="nx">trigger</span><span class="p">(</span><span class="s1">&#39;change:&#39;</span> <span class="o">+</span> <span class="nx">attr</span><span class="p">,</span> <span class="k">this</span><span class="p">);</span>
<span class="k">this</span><span class="p">.</span><span class="nx">change</span><span class="p">();</span>
<span class="p">}</span>
<span class="k">return</span> <span class="k">this</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-31"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-31">&#182;</a> </div> <p>Clear all attributes on the model, firing <code>"change"</code> unless you choose
to silence it.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">clear</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">options</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">options</span> <span class="o">||</span> <span class="p">(</span><span class="nx">options</span> <span class="o">=</span> <span class="p">{});</span>
<span class="kd">var</span> <span class="nx">old</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">attributes</span><span class="p">;</span></pre></div> </td> </tr> <tr id="section-32"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-32">&#182;</a> </div> <p>Run validation.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="kd">var</span> <span class="nx">validObj</span> <span class="o">=</span> <span class="p">{};</span>
<span class="k">for</span> <span class="p">(</span><span class="nx">attr</span> <span class="k">in</span> <span class="nx">old</span><span class="p">)</span> <span class="nx">validObj</span><span class="p">[</span><span class="nx">attr</span><span class="p">]</span> <span class="o">=</span> <span class="k">void</span> <span class="mi">0</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">options</span><span class="p">.</span><span class="nx">silent</span> <span class="o">&amp;&amp;</span> <span class="k">this</span><span class="p">.</span><span class="nx">validate</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="k">this</span><span class="p">.</span><span class="nx">_performValidation</span><span class="p">(</span><span class="nx">validObj</span><span class="p">,</span> <span class="nx">options</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
<span class="k">this</span><span class="p">.</span><span class="nx">attributes</span> <span class="o">=</span> <span class="p">{};</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">options</span><span class="p">.</span><span class="nx">silent</span><span class="p">)</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_changed</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
<span class="k">for</span> <span class="p">(</span><span class="nx">attr</span> <span class="k">in</span> <span class="nx">old</span><span class="p">)</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">trigger</span><span class="p">(</span><span class="s1">&#39;change:&#39;</span> <span class="o">+</span> <span class="nx">attr</span><span class="p">,</span> <span class="k">this</span><span class="p">);</span>
<span class="p">}</span>
<span class="k">this</span><span class="p">.</span><span class="nx">change</span><span class="p">();</span>
<span class="p">}</span>
<span class="k">return</span> <span class="k">this</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-33"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-33">&#182;</a> </div> <p>Fetch the model from the server. If the server's representation of the
model differs from its current attributes, they will be overriden,
triggering a <code>"change"</code> event.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">fetch</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">options</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">options</span> <span class="o">||</span> <span class="p">(</span><span class="nx">options</span> <span class="o">=</span> <span class="p">{});</span>
<span class="kd">var</span> <span class="nx">model</span> <span class="o">=</span> <span class="k">this</span><span class="p">;</span>
<span class="kd">var</span> <span class="nx">success</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">resp</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">model</span><span class="p">.</span><span class="nx">set</span><span class="p">(</span><span class="nx">model</span><span class="p">.</span><span class="nx">parse</span><span class="p">(</span><span class="nx">resp</span><span class="p">),</span> <span class="nx">options</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">options</span><span class="p">.</span><span class="nx">success</span><span class="p">)</span> <span class="nx">options</span><span class="p">.</span><span class="nx">success</span><span class="p">(</span><span class="nx">model</span><span class="p">,</span> <span class="nx">resp</span><span class="p">);</span>
<span class="p">};</span>
<span class="kd">var</span> <span class="nx">error</span> <span class="o">=</span> <span class="nx">options</span><span class="p">.</span><span class="nx">error</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">options</span><span class="p">.</span><span class="nx">error</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="nx">model</span><span class="p">);</span>
<span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">sync</span> <span class="o">||</span> <span class="nx">Backbone</span><span class="p">.</span><span class="nx">sync</span><span class="p">)(</span><span class="s1">&#39;read&#39;</span><span class="p">,</span> <span class="k">this</span><span class="p">,</span> <span class="nx">success</span><span class="p">,</span> <span class="nx">error</span><span class="p">);</span>
<span class="k">return</span> <span class="k">this</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-34"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-34">&#182;</a> </div> <p>Set a hash of model attributes, and sync the model to the server.
If the server returns an attributes hash that differs, the model's
state will be <code>set</code> again.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">save</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">attrs</span><span class="p">,</span> <span class="nx">options</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">options</span> <span class="o">||</span> <span class="p">(</span><span class="nx">options</span> <span class="o">=</span> <span class="p">{});</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">attrs</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="k">this</span><span class="p">.</span><span class="nx">set</span><span class="p">(</span><span class="nx">attrs</span><span class="p">,</span> <span class="nx">options</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
<span class="kd">var</span> <span class="nx">model</span> <span class="o">=</span> <span class="k">this</span><span class="p">;</span>
<span class="kd">var</span> <span class="nx">success</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">resp</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">model</span><span class="p">.</span><span class="nx">set</span><span class="p">(</span><span class="nx">model</span><span class="p">.</span><span class="nx">parse</span><span class="p">(</span><span class="nx">resp</span><span class="p">),</span> <span class="nx">options</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">options</span><span class="p">.</span><span class="nx">success</span><span class="p">)</span> <span class="nx">options</span><span class="p">.</span><span class="nx">success</span><span class="p">(</span><span class="nx">model</span><span class="p">,</span> <span class="nx">resp</span><span class="p">);</span>
<span class="p">};</span>
<span class="kd">var</span> <span class="nx">error</span> <span class="o">=</span> <span class="nx">options</span><span class="p">.</span><span class="nx">error</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">options</span><span class="p">.</span><span class="nx">error</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="nx">model</span><span class="p">);</span>
<span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">isNew</span><span class="p">()</span> <span class="o">?</span> <span class="s1">&#39;create&#39;</span> <span class="o">:</span> <span class="s1">&#39;update&#39;</span><span class="p">;</span>
<span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">sync</span> <span class="o">||</span> <span class="nx">Backbone</span><span class="p">.</span><span class="nx">sync</span><span class="p">)(</span><span class="nx">method</span><span class="p">,</span> <span class="k">this</span><span class="p">,</span> <span class="nx">success</span><span class="p">,</span> <span class="nx">error</span><span class="p">);</span>
<span class="k">return</span> <span class="k">this</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-35"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-35">&#182;</a> </div> <p>Destroy this model on the server. Upon success, the model is removed
from its collection, if it has one.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">destroy</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">options</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">options</span> <span class="o">||</span> <span class="p">(</span><span class="nx">options</span> <span class="o">=</span> <span class="p">{});</span>
<span class="kd">var</span> <span class="nx">model</span> <span class="o">=</span> <span class="k">this</span><span class="p">;</span>
<span class="kd">var</span> <span class="nx">success</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">resp</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">model</span><span class="p">.</span><span class="nx">collection</span><span class="p">)</span> <span class="nx">model</span><span class="p">.</span><span class="nx">collection</span><span class="p">.</span><span class="nx">remove</span><span class="p">(</span><span class="nx">model</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">options</span><span class="p">.</span><span class="nx">success</span><span class="p">)</span> <span class="nx">options</span><span class="p">.</span><span class="nx">success</span><span class="p">(</span><span class="nx">model</span><span class="p">,</span> <span class="nx">resp</span><span class="p">);</span>
<span class="p">};</span>
<span class="kd">var</span> <span class="nx">error</span> <span class="o">=</span> <span class="nx">options</span><span class="p">.</span><span class="nx">error</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">options</span><span class="p">.</span><span class="nx">error</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="nx">model</span><span class="p">);</span>
<span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">sync</span> <span class="o">||</span> <span class="nx">Backbone</span><span class="p">.</span><span class="nx">sync</span><span class="p">)(</span><span class="s1">&#39;delete&#39;</span><span class="p">,</span> <span class="k">this</span><span class="p">,</span> <span class="nx">success</span><span class="p">,</span> <span class="nx">error</span><span class="p">);</span>
<span class="k">return</span> <span class="k">this</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-36"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-36">&#182;</a> </div> <p>Default URL for the model's representation on the server -- if you're
using Backbone's restful methods, override this to change the endpoint
that will be called.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">url</span> <span class="o">:</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
<span class="kd">var</span> <span class="nx">base</span> <span class="o">=</span> <span class="nx">getUrl</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">collection</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">isNew</span><span class="p">())</span> <span class="k">return</span> <span class="nx">base</span><span class="p">;</span>
<span class="k">return</span> <span class="nx">base</span> <span class="o">+</span> <span class="p">(</span><span class="nx">base</span><span class="p">.</span><span class="nx">charAt</span><span class="p">(</span><span class="nx">base</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;/&#39;</span> <span class="o">?</span> <span class="s1">&#39;&#39;</span> <span class="o">:</span> <span class="s1">&#39;/&#39;</span><span class="p">)</span> <span class="o">+</span> <span class="k">this</span><span class="p">.</span><span class="nx">id</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-37"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-37">&#182;</a> </div> <p><strong>parse</strong> converts a response into the hash of attributes to be <code>set</code> on
the model. The default implementation is just to pass the response along.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">parse</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">resp</span><span class="p">)</span> <span class="p">{</span>
<span class="k">return</span> <span class="nx">resp</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-38"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-38">&#182;</a> </div> <p>Create a new model with identical attributes to this one.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">clone</span> <span class="o">:</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
<span class="k">return</span> <span class="k">new</span> <span class="k">this</span><span class="p">.</span><span class="nx">constructor</span><span class="p">(</span><span class="k">this</span><span class="p">);</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-39"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-39">&#182;</a> </div> <p>A model is new if it has never been saved to the server, and has a negative
ID.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">isNew</span> <span class="o">:</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
<span class="k">return</span> <span class="o">!</span><span class="k">this</span><span class="p">.</span><span class="nx">id</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-40"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-40">&#182;</a> </div> <p>Call this method to manually fire a <code>change</code> event for this model.
Calling this will cause all objects observing the model to update.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">change</span> <span class="o">:</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">trigger</span><span class="p">(</span><span class="s1">&#39;change&#39;</span><span class="p">,</span> <span class="k">this</span><span class="p">);</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_previousAttributes</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">attributes</span><span class="p">);</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_changed</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-41"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-41">&#182;</a> </div> <p>Determine if the model has changed since the last <code>"change"</code> event.
If you specify an attribute name, determine if that attribute has changed.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">hasChanged</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">attr</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">attr</span><span class="p">)</span> <span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">_previousAttributes</span><span class="p">[</span><span class="nx">attr</span><span class="p">]</span> <span class="o">!=</span> <span class="k">this</span><span class="p">.</span><span class="nx">attributes</span><span class="p">[</span><span class="nx">attr</span><span class="p">];</span>
<span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">_changed</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-42"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-42">&#182;</a> </div> <p>Return an object containing all the attributes that have changed, or false
if there are no changed attributes. Useful for determining what parts of a
view need to be updated and/or what attributes need to be persisted to
the server.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">changedAttributes</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">now</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">now</span> <span class="o">||</span> <span class="p">(</span><span class="nx">now</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">attributes</span><span class="p">);</span>
<span class="kd">var</span> <span class="nx">old</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">_previousAttributes</span><span class="p">;</span>
<span class="kd">var</span> <span class="nx">changed</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span>
<span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">attr</span> <span class="k">in</span> <span class="nx">now</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">old</span><span class="p">[</span><span class="nx">attr</span><span class="p">],</span> <span class="nx">now</span><span class="p">[</span><span class="nx">attr</span><span class="p">]))</span> <span class="p">{</span>
<span class="nx">changed</span> <span class="o">=</span> <span class="nx">changed</span> <span class="o">||</span> <span class="p">{};</span>
<span class="nx">changed</span><span class="p">[</span><span class="nx">attr</span><span class="p">]</span> <span class="o">=</span> <span class="nx">now</span><span class="p">[</span><span class="nx">attr</span><span class="p">];</span>
<span class="p">}</span>
<span class="p">}</span>
<span class="k">return</span> <span class="nx">changed</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-43"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-43">&#182;</a> </div> <p>Get the previous value of an attribute, recorded at the time the last
<code>"change"</code> event was fired.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">previous</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">attr</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">attr</span> <span class="o">||</span> <span class="o">!</span><span class="k">this</span><span class="p">.</span><span class="nx">_previousAttributes</span><span class="p">)</span> <span class="k">return</span> <span class="kc">null</span><span class="p">;</span>
<span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">_previousAttributes</span><span class="p">[</span><span class="nx">attr</span><span class="p">];</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-44"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-44">&#182;</a> </div> <p>Get all of the attributes of the model at the time of the previous
<code>"change"</code> event.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">previousAttributes</span> <span class="o">:</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
<span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_previousAttributes</span><span class="p">);</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-45"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-45">&#182;</a> </div> <p>Run validation against a set of incoming attributes, returning <code>true</code>
if all is well. If a specific <code>error</code> callback has been passed,
call that instead of firing the general <code>"error"</code> event.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">_performValidation</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">attrs</span><span class="p">,</span> <span class="nx">options</span><span class="p">)</span> <span class="p">{</span>
<span class="kd">var</span> <span class="nx">error</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">validate</span><span class="p">(</span><span class="nx">attrs</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">error</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">options</span><span class="p">.</span><span class="nx">error</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">options</span><span class="p">.</span><span class="nx">error</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">error</span><span class="p">);</span>
<span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">trigger</span><span class="p">(</span><span class="s1">&#39;error&#39;</span><span class="p">,</span> <span class="k">this</span><span class="p">,</span> <span class="nx">error</span><span class="p">);</span>
<span class="p">}</span>
<span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
<span class="p">}</span>
<span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
<span class="p">}</span>
<span class="p">});</span></pre></div> </td> </tr> <tr id="section-46"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-46">&#182;</a> </div> <h2>Backbone.Collection</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-47"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-47">&#182;</a> </div> <p>Provides a standard collection class for our sets of models, ordered
or unordered. If a <code>comparator</code> is specified, the Collection will maintain
its models in sort order, as they're added and removed.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Backbone</span><span class="p">.</span><span class="nx">Collection</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">models</span><span class="p">,</span> <span class="nx">options</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">options</span> <span class="o">||</span> <span class="p">(</span><span class="nx">options</span> <span class="o">=</span> <span class="p">{});</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">options</span><span class="p">.</span><span class="nx">comparator</span><span class="p">)</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">comparator</span> <span class="o">=</span> <span class="nx">options</span><span class="p">.</span><span class="nx">comparator</span><span class="p">;</span>
<span class="k">delete</span> <span class="nx">options</span><span class="p">.</span><span class="nx">comparator</span><span class="p">;</span>
<span class="p">}</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_boundOnModelEvent</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_onModelEvent</span><span class="p">,</span> <span class="k">this</span><span class="p">);</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_reset</span><span class="p">();</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">models</span><span class="p">)</span> <span class="k">this</span><span class="p">.</span><span class="nx">refresh</span><span class="p">(</span><span class="nx">models</span><span class="p">,</span> <span class="p">{</span><span class="nx">silent</span><span class="o">:</span> <span class="kc">true</span><span class="p">});</span>
<span class="k">this</span><span class="p">.</span><span class="nx">initialize</span><span class="p">(</span><span class="nx">models</span><span class="p">,</span> <span class="nx">options</span><span class="p">);</span>
<span class="p">};</span></pre></div> </td> </tr> <tr id="section-48"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-48">&#182;</a> </div> <p>Define the Collection's inheritable methods.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span><span class="p">(</span><span class="nx">Backbone</span><span class="p">.</span><span class="nx">Collection</span><span class="p">.</span><span class="nx">prototype</span><span class="p">,</span> <span class="nx">Backbone</span><span class="p">.</span><span class="nx">Events</span><span class="p">,</span> <span class="p">{</span></pre></div> </td> </tr> <tr id="section-49"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-49">&#182;</a> </div> <p>The default model for a collection is just a <strong>Backbone.Model</strong>.
This should be overridden in most cases.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">model</span> <span class="o">:</span> <span class="nx">Backbone</span><span class="p">.</span><span class="nx">Model</span><span class="p">,</span></pre></div> </td> </tr> <tr id="section-50"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-50">&#182;</a> </div> <p>Initialize is an empty function by default. Override it with your own
initialization logic.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">initialize</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(){},</span></pre></div> </td> </tr> <tr id="section-51"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-51">&#182;</a> </div> <p>The JSON representation of a Collection is an array of the
models' attributes.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">toJSON</span> <span class="o">:</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
<span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="kd">function</span><span class="p">(</span><span class="nx">model</span><span class="p">){</span> <span class="k">return</span> <span class="nx">model</span><span class="p">.</span><span class="nx">toJSON</span><span class="p">();</span> <span class="p">});</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-52"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-52">&#182;</a> </div> <p>Add a model, or list of models to the set. Pass <strong>silent</strong> to avoid
firing the <code>added</code> event for every new model.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">add</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">models</span><span class="p">,</span> <span class="nx">options</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">models</span><span class="p">))</span> <span class="p">{</span>
<span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">l</span> <span class="o">=</span> <span class="nx">models</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">l</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_add</span><span class="p">(</span><span class="nx">models</span><span class="p">[</span><span class="nx">i</span><span class="p">],</span> <span class="nx">options</span><span class="p">);</span>
<span class="p">}</span>
<span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_add</span><span class="p">(</span><span class="nx">models</span><span class="p">,</span> <span class="nx">options</span><span class="p">);</span>
<span class="p">}</span>
<span class="k">return</span> <span class="k">this</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-53"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-53">&#182;</a> </div> <p>Remove a model, or a list of models from the set. Pass silent to avoid
firing the <code>removed</code> event for every model removed.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">remove</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">models</span><span class="p">,</span> <span class="nx">options</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">models</span><span class="p">))</span> <span class="p">{</span>
<span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">l</span> <span class="o">=</span> <span class="nx">models</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">l</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_remove</span><span class="p">(</span><span class="nx">models</span><span class="p">[</span><span class="nx">i</span><span class="p">],</span> <span class="nx">options</span><span class="p">);</span>
<span class="p">}</span>
<span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_remove</span><span class="p">(</span><span class="nx">models</span><span class="p">,</span> <span class="nx">options</span><span class="p">);</span>
<span class="p">}</span>
<span class="k">return</span> <span class="k">this</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-54"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-54">&#182;</a> </div> <p>Get a model from the set by id.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">get</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">id</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">id</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="kc">null</span><span class="p">;</span>
<span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">_byId</span><span class="p">[</span><span class="nx">id</span><span class="p">.</span><span class="nx">id</span> <span class="o">!=</span> <span class="kc">null</span> <span class="o">?</span> <span class="nx">id</span><span class="p">.</span><span class="nx">id</span> <span class="o">:</span> <span class="nx">id</span><span class="p">];</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-55"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-55">&#182;</a> </div> <p>Get a model from the set by client id.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">getByCid</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">cid</span><span class="p">)</span> <span class="p">{</span>
<span class="k">return</span> <span class="nx">cid</span> <span class="o">&amp;&amp;</span> <span class="k">this</span><span class="p">.</span><span class="nx">_byCid</span><span class="p">[</span><span class="nx">cid</span><span class="p">.</span><span class="nx">cid</span> <span class="o">||</span> <span class="nx">cid</span><span class="p">];</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-56"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-56">&#182;</a> </div> <p>Get the model at the given index.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">at</span><span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">index</span><span class="p">)</span> <span class="p">{</span>
<span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">models</span><span class="p">[</span><span class="nx">index</span><span class="p">];</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-57"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-57">&#182;</a> </div> <p>Force the collection to re-sort itself. You don't need to call this under normal
circumstances, as the set will maintain sort order as each item is added.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">sort</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">options</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">options</span> <span class="o">||</span> <span class="p">(</span><span class="nx">options</span> <span class="o">=</span> <span class="p">{});</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="k">this</span><span class="p">.</span><span class="nx">comparator</span><span class="p">)</span> <span class="k">throw</span> <span class="k">new</span> <span class="nb">Error</span><span class="p">(</span><span class="s1">&#39;Cannot sort a set without a comparator&#39;</span><span class="p">);</span>
<span class="k">this</span><span class="p">.</span><span class="nx">models</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">sortBy</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">comparator</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">options</span><span class="p">.</span><span class="nx">silent</span><span class="p">)</span> <span class="k">this</span><span class="p">.</span><span class="nx">trigger</span><span class="p">(</span><span class="s1">&#39;refresh&#39;</span><span class="p">,</span> <span class="k">this</span><span class="p">);</span>
<span class="k">return</span> <span class="k">this</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-58"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-58">&#182;</a> </div> <p>Pluck an attribute from each model in the collection.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">pluck</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">attr</span><span class="p">)</span> <span class="p">{</span>
<span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">models</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">model</span><span class="p">){</span> <span class="k">return</span> <span class="nx">model</span><span class="p">.</span><span class="nx">get</span><span class="p">(</span><span class="nx">attr</span><span class="p">);</span> <span class="p">});</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-59"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-59">&#182;</a> </div> <p>When you have more items than you want to add or remove individually,
you can refresh the entire set with a new list of models, without firing
any <code>added</code> or <code>removed</code> events. Fires <code>refresh</code> when finished.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">refresh</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">models</span><span class="p">,</span> <span class="nx">options</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">models</span> <span class="o">||</span> <span class="p">(</span><span class="nx">models</span> <span class="o">=</span> <span class="p">[]);</span>
<span class="nx">options</span> <span class="o">||</span> <span class="p">(</span><span class="nx">options</span> <span class="o">=</span> <span class="p">{});</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_reset</span><span class="p">();</span>
<span class="k">this</span><span class="p">.</span><span class="nx">add</span><span class="p">(</span><span class="nx">models</span><span class="p">,</span> <span class="p">{</span><span class="nx">silent</span><span class="o">:</span> <span class="kc">true</span><span class="p">});</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">options</span><span class="p">.</span><span class="nx">silent</span><span class="p">)</span> <span class="k">this</span><span class="p">.</span><span class="nx">trigger</span><span class="p">(</span><span class="s1">&#39;refresh&#39;</span><span class="p">,</span> <span class="k">this</span><span class="p">);</span>
<span class="k">return</span> <span class="k">this</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-60"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-60">&#182;</a> </div> <p>Fetch the default set of models for this collection, refreshing the
collection when they arrive.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">fetch</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">options</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">options</span> <span class="o">||</span> <span class="p">(</span><span class="nx">options</span> <span class="o">=</span> <span class="p">{});</span>
<span class="kd">var</span> <span class="nx">collection</span> <span class="o">=</span> <span class="k">this</span><span class="p">;</span>
<span class="kd">var</span> <span class="nx">success</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">resp</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">collection</span><span class="p">.</span><span class="nx">refresh</span><span class="p">(</span><span class="nx">collection</span><span class="p">.</span><span class="nx">parse</span><span class="p">(</span><span class="nx">resp</span><span class="p">));</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">options</span><span class="p">.</span><span class="nx">success</span><span class="p">)</span> <span class="nx">options</span><span class="p">.</span><span class="nx">success</span><span class="p">(</span><span class="nx">collection</span><span class="p">,</span> <span class="nx">resp</span><span class="p">);</span>
<span class="p">};</span>
<span class="kd">var</span> <span class="nx">error</span> <span class="o">=</span> <span class="nx">options</span><span class="p">.</span><span class="nx">error</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">options</span><span class="p">.</span><span class="nx">error</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="nx">collection</span><span class="p">);</span>
<span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">sync</span> <span class="o">||</span> <span class="nx">Backbone</span><span class="p">.</span><span class="nx">sync</span><span class="p">)(</span><span class="s1">&#39;read&#39;</span><span class="p">,</span> <span class="k">this</span><span class="p">,</span> <span class="nx">success</span><span class="p">,</span> <span class="nx">error</span><span class="p">);</span>
<span class="k">return</span> <span class="k">this</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-61"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-61">&#182;</a> </div> <p>Create a new instance of a model in this collection. After the model
has been created on the server, it will be added to the collection.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">create</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">model</span><span class="p">,</span> <span class="nx">options</span><span class="p">)</span> <span class="p">{</span>
<span class="kd">var</span> <span class="nx">coll</span> <span class="o">=</span> <span class="k">this</span><span class="p">;</span>
<span class="nx">options</span> <span class="o">||</span> <span class="p">(</span><span class="nx">options</span> <span class="o">=</span> <span class="p">{});</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">model</span> <span class="k">instanceof</span> <span class="nx">Backbone</span><span class="p">.</span><span class="nx">Model</span><span class="p">))</span> <span class="p">{</span>
<span class="nx">model</span> <span class="o">=</span> <span class="k">new</span> <span class="k">this</span><span class="p">.</span><span class="nx">model</span><span class="p">(</span><span class="nx">model</span><span class="p">,</span> <span class="p">{</span><span class="nx">collection</span><span class="o">:</span> <span class="nx">coll</span><span class="p">});</span>
<span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
<span class="nx">model</span><span class="p">.</span><span class="nx">collection</span> <span class="o">=</span> <span class="nx">coll</span><span class="p">;</span>
<span class="p">}</span>
<span class="kd">var</span> <span class="nx">success</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">nextModel</span><span class="p">,</span> <span class="nx">resp</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">coll</span><span class="p">.</span><span class="nx">add</span><span class="p">(</span><span class="nx">nextModel</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">options</span><span class="p">.</span><span class="nx">success</span><span class="p">)</span> <span class="nx">options</span><span class="p">.</span><span class="nx">success</span><span class="p">(</span><span class="nx">nextModel</span><span class="p">,</span> <span class="nx">resp</span><span class="p">);</span>
<span class="p">};</span>
<span class="k">return</span> <span class="nx">model</span><span class="p">.</span><span class="nx">save</span><span class="p">(</span><span class="kc">null</span><span class="p">,</span> <span class="p">{</span><span class="nx">success</span> <span class="o">:</span> <span class="nx">success</span><span class="p">,</span> <span class="nx">error</span> <span class="o">:</span> <span class="nx">options</span><span class="p">.</span><span class="nx">error</span><span class="p">});</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-62"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-62">&#182;</a> </div> <p><strong>parse</strong> converts a response into a list of models to be added to the
collection. The default implementation is just to pass it through.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">parse</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">resp</span><span class="p">)</span> <span class="p">{</span>
<span class="k">return</span> <span class="nx">resp</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-63"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-63">&#182;</a> </div> <p>Proxy to _'s chain. Can't be proxied the same way the rest of the
underscore methods are proxied because it relies on the underscore
constructor.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">chain</span><span class="o">:</span> <span class="kd">function</span> <span class="p">()</span> <span class="p">{</span>
<span class="k">return</span> <span class="nx">_</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">models</span><span class="p">).</span><span class="nx">chain</span><span class="p">();</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-64"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-64">&#182;</a> </div> <p>Reset all internal state. Called when the collection is refreshed.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">_reset</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">options</span><span class="p">)</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">length</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
<span class="k">this</span><span class="p">.</span><span class="nx">models</span> <span class="o">=</span> <span class="p">[];</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_byId</span> <span class="o">=</span> <span class="p">{};</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_byCid</span> <span class="o">=</span> <span class="p">{};</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-65"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-65">&#182;</a> </div> <p>Internal implementation of adding a single model to the set, updating
hash indexes for <code>id</code> and <code>cid</code> lookups.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">_add</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">model</span><span class="p">,</span> <span class="nx">options</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">options</span> <span class="o">||</span> <span class="p">(</span><span class="nx">options</span> <span class="o">=</span> <span class="p">{});</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">model</span> <span class="k">instanceof</span> <span class="nx">Backbone</span><span class="p">.</span><span class="nx">Model</span><span class="p">))</span> <span class="p">{</span>
<span class="nx">model</span> <span class="o">=</span> <span class="k">new</span> <span class="k">this</span><span class="p">.</span><span class="nx">model</span><span class="p">(</span><span class="nx">model</span><span class="p">,</span> <span class="p">{</span><span class="nx">collection</span><span class="o">:</span> <span class="k">this</span><span class="p">});</span>
<span class="p">}</span>
<span class="kd">var</span> <span class="nx">already</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">getByCid</span><span class="p">(</span><span class="nx">model</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">already</span><span class="p">)</span> <span class="k">throw</span> <span class="k">new</span> <span class="nb">Error</span><span class="p">([</span><span class="s2">&quot;Can&#39;t add the same model to a set twice&quot;</span><span class="p">,</span> <span class="nx">already</span><span class="p">.</span><span class="nx">id</span><span class="p">]);</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_byId</span><span class="p">[</span><span class="nx">model</span><span class="p">.</span><span class="nx">id</span><span class="p">]</span> <span class="o">=</span> <span class="nx">model</span><span class="p">;</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_byCid</span><span class="p">[</span><span class="nx">model</span><span class="p">.</span><span class="nx">cid</span><span class="p">]</span> <span class="o">=</span> <span class="nx">model</span><span class="p">;</span>
<span class="nx">model</span><span class="p">.</span><span class="nx">collection</span> <span class="o">=</span> <span class="k">this</span><span class="p">;</span>
<span class="kd">var</span> <span class="nx">index</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">comparator</span> <span class="o">?</span> <span class="k">this</span><span class="p">.</span><span class="nx">sortedIndex</span><span class="p">(</span><span class="nx">model</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">comparator</span><span class="p">)</span> <span class="o">:</span> <span class="k">this</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
<span class="k">this</span><span class="p">.</span><span class="nx">models</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="nx">index</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">model</span><span class="p">);</span>
<span class="nx">model</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="s1">&#39;all&#39;</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_boundOnModelEvent</span><span class="p">);</span>
<span class="k">this</span><span class="p">.</span><span class="nx">length</span><span class="o">++</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">options</span><span class="p">.</span><span class="nx">silent</span><span class="p">)</span> <span class="nx">model</span><span class="p">.</span><span class="nx">trigger</span><span class="p">(</span><span class="s1">&#39;add&#39;</span><span class="p">,</span> <span class="nx">model</span><span class="p">,</span> <span class="k">this</span><span class="p">);</span>
<span class="k">return</span> <span class="nx">model</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-66"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-66">&#182;</a> </div> <p>Internal implementation of removing a single model from the set, updating
hash indexes for <code>id</code> and <code>cid</code> lookups.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">_remove</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">model</span><span class="p">,</span> <span class="nx">options</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">options</span> <span class="o">||</span> <span class="p">(</span><span class="nx">options</span> <span class="o">=</span> <span class="p">{});</span>
<span class="nx">model</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">getByCid</span><span class="p">(</span><span class="nx">model</span><span class="p">)</span> <span class="o">||</span> <span class="k">this</span><span class="p">.</span><span class="nx">get</span><span class="p">(</span><span class="nx">model</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">model</span><span class="p">)</span> <span class="k">return</span> <span class="kc">null</span><span class="p">;</span>
<span class="k">delete</span> <span class="k">this</span><span class="p">.</span><span class="nx">_byId</span><span class="p">[</span><span class="nx">model</span><span class="p">.</span><span class="nx">id</span><span class="p">];</span>
<span class="k">delete</span> <span class="k">this</span><span class="p">.</span><span class="nx">_byCid</span><span class="p">[</span><span class="nx">model</span><span class="p">.</span><span class="nx">cid</span><span class="p">];</span>
<span class="k">delete</span> <span class="nx">model</span><span class="p">.</span><span class="nx">collection</span><span class="p">;</span>
<span class="k">this</span><span class="p">.</span><span class="nx">models</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">model</span><span class="p">),</span> <span class="mi">1</span><span class="p">);</span>
<span class="k">this</span><span class="p">.</span><span class="nx">length</span><span class="o">--</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">options</span><span class="p">.</span><span class="nx">silent</span><span class="p">)</span> <span class="nx">model</span><span class="p">.</span><span class="nx">trigger</span><span class="p">(</span><span class="s1">&#39;remove&#39;</span><span class="p">,</span> <span class="nx">model</span><span class="p">,</span> <span class="k">this</span><span class="p">);</span>
<span class="nx">model</span><span class="p">.</span><span class="nx">unbind</span><span class="p">(</span><span class="s1">&#39;all&#39;</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_boundOnModelEvent</span><span class="p">);</span>
<span class="k">return</span> <span class="nx">model</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-67"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-67">&#182;</a> </div> <p>Internal method called every time a model in the set fires an event.
Sets need to update their indexes when models change ids. All other
events simply proxy through.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">_onModelEvent</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">ev</span><span class="p">,</span> <span class="nx">model</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">ev</span> <span class="o">===</span> <span class="s1">&#39;change:id&#39;</span><span class="p">)</span> <span class="p">{</span>
<span class="k">delete</span> <span class="k">this</span><span class="p">.</span><span class="nx">_byId</span><span class="p">[</span><span class="nx">model</span><span class="p">.</span><span class="nx">previous</span><span class="p">(</span><span class="s1">&#39;id&#39;</span><span class="p">)];</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_byId</span><span class="p">[</span><span class="nx">model</span><span class="p">.</span><span class="nx">id</span><span class="p">]</span> <span class="o">=</span> <span class="nx">model</span><span class="p">;</span>
<span class="p">}</span>
<span class="k">this</span><span class="p">.</span><span class="nx">trigger</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
<span class="p">}</span>
<span class="p">});</span></pre></div> </td> </tr> <tr id="section-68"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-68">&#182;</a> </div> <p>Underscore methods that we want to implement on the Collection.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="kd">var</span> <span class="nx">methods</span> <span class="o">=</span> <span class="p">[</span><span class="s1">&#39;forEach&#39;</span><span class="p">,</span> <span class="s1">&#39;each&#39;</span><span class="p">,</span> <span class="s1">&#39;map&#39;</span><span class="p">,</span> <span class="s1">&#39;reduce&#39;</span><span class="p">,</span> <span class="s1">&#39;reduceRight&#39;</span><span class="p">,</span> <span class="s1">&#39;find&#39;</span><span class="p">,</span> <span class="s1">&#39;detect&#39;</span><span class="p">,</span>
<span class="s1">&#39;filter&#39;</span><span class="p">,</span> <span class="s1">&#39;select&#39;</span><span class="p">,</span> <span class="s1">&#39;reject&#39;</span><span class="p">,</span> <span class="s1">&#39;every&#39;</span><span class="p">,</span> <span class="s1">&#39;all&#39;</span><span class="p">,</span> <span class="s1">&#39;some&#39;</span><span class="p">,</span> <span class="s1">&#39;any&#39;</span><span class="p">,</span> <span class="s1">&#39;include&#39;</span><span class="p">,</span>
<span class="s1">&#39;invoke&#39;</span><span class="p">,</span> <span class="s1">&#39;max&#39;</span><span class="p">,</span> <span class="s1">&#39;min&#39;</span><span class="p">,</span> <span class="s1">&#39;sortBy&#39;</span><span class="p">,</span> <span class="s1">&#39;sortedIndex&#39;</span><span class="p">,</span> <span class="s1">&#39;toArray&#39;</span><span class="p">,</span> <span class="s1">&#39;size&#39;</span><span class="p">,</span>
<span class="s1">&#39;first&#39;</span><span class="p">,</span> <span class="s1">&#39;rest&#39;</span><span class="p">,</span> <span class="s1">&#39;last&#39;</span><span class="p">,</span> <span class="s1">&#39;without&#39;</span><span class="p">,</span> <span class="s1">&#39;indexOf&#39;</span><span class="p">,</span> <span class="s1">&#39;lastIndexOf&#39;</span><span class="p">,</span> <span class="s1">&#39;isEmpty&#39;</span><span class="p">];</span></pre></div> </td> </tr> <tr id="section-69"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-69">&#182;</a> </div> <p>Mix in each Underscore method as a proxy to <code>Collection#models</code>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">_</span><span class="p">.</span><span class="nx">each</span><span class="p">(</span><span class="nx">methods</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">method</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">Backbone</span><span class="p">.</span><span class="nx">Collection</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">method</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
<span class="k">return</span> <span class="nx">_</span><span class="p">[</span><span class="nx">method</span><span class="p">].</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="p">[</span><span class="k">this</span><span class="p">.</span><span class="nx">models</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">arguments</span><span class="p">)));</span>
<span class="p">};</span>
<span class="p">});</span></pre></div> </td> </tr> <tr id="section-70"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-70">&#182;</a> </div> <h2>Backbone.Controller</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-71"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-71">&#182;</a> </div> <p>Controllers map faux-URLs to actions, and fire events when routes are
matched. Creating a new one sets its <code>routes</code> hash, if not set statically.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Backbone</span><span class="p">.</span><span class="nx">Controller</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">options</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">options</span> <span class="o">||</span> <span class="p">(</span><span class="nx">options</span> <span class="o">=</span> <span class="p">{});</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">options</span><span class="p">.</span><span class="nx">routes</span><span class="p">)</span> <span class="k">this</span><span class="p">.</span><span class="nx">routes</span> <span class="o">=</span> <span class="nx">options</span><span class="p">.</span><span class="nx">routes</span><span class="p">;</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_bindRoutes</span><span class="p">();</span>
<span class="k">this</span><span class="p">.</span><span class="nx">initialize</span><span class="p">(</span><span class="nx">options</span><span class="p">);</span>
<span class="p">};</span></pre></div> </td> </tr> <tr id="section-72"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-72">&#182;</a> </div> <p>Cached regular expressions for matching named param parts and splatted
parts of route strings.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="kd">var</span> <span class="nx">namedParam</span> <span class="o">=</span> <span class="sr">/:([\w\d]+)/g</span><span class="p">;</span>
<span class="kd">var</span> <span class="nx">splatParam</span> <span class="o">=</span> <span class="sr">/\*([\w\d]+)/g</span><span class="p">;</span></pre></div> </td> </tr> <tr id="section-73"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-73">&#182;</a> </div> <p>Set up all inheritable <strong>Backbone.Controller</strong> properties and methods.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span><span class="p">(</span><span class="nx">Backbone</span><span class="p">.</span><span class="nx">Controller</span><span class="p">.</span><span class="nx">prototype</span><span class="p">,</span> <span class="nx">Backbone</span><span class="p">.</span><span class="nx">Events</span><span class="p">,</span> <span class="p">{</span></pre></div> </td> </tr> <tr id="section-74"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-74">&#182;</a> </div> <p>Initialize is an empty function by default. Override it with your own
initialization logic.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">initialize</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(){},</span></pre></div> </td> </tr> <tr id="section-75"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-75">&#182;</a> </div> <p>Manually bind a single named route to a callback. For example:</p>
<pre><code>this.route('search/:query/p:num', 'search', function(query, num) {
...
});
</code></pre> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">route</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">route</span><span class="p">,</span> <span class="nx">name</span><span class="p">,</span> <span class="nx">callback</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">Backbone</span><span class="p">.</span><span class="nx">history</span> <span class="o">||</span> <span class="p">(</span><span class="nx">Backbone</span><span class="p">.</span><span class="nx">history</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">Backbone</span><span class="p">.</span><span class="nx">History</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">route</span><span class="p">))</span> <span class="nx">route</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">_routeToRegExp</span><span class="p">(</span><span class="nx">route</span><span class="p">);</span>
<span class="nx">Backbone</span><span class="p">.</span><span class="nx">history</span><span class="p">.</span><span class="nx">route</span><span class="p">(</span><span class="nx">route</span><span class="p">,</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="kd">function</span><span class="p">(</span><span class="nx">fragment</span><span class="p">)</span> <span class="p">{</span>
<span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">_extractParameters</span><span class="p">(</span><span class="nx">route</span><span class="p">,</span> <span class="nx">fragment</span><span class="p">);</span>
<span class="nx">callback</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
<span class="k">this</span><span class="p">.</span><span class="nx">trigger</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="p">[</span><span class="s1">&#39;route:&#39;</span> <span class="o">+</span> <span class="nx">name</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">args</span><span class="p">));</span>
<span class="p">},</span> <span class="k">this</span><span class="p">));</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-76"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-76">&#182;</a> </div> <p>Simple proxy to <code>Backbone.history</code> to save a fragment into the history,
without triggering routes.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">saveLocation</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">fragment</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">Backbone</span><span class="p">.</span><span class="nx">history</span><span class="p">.</span><span class="nx">saveLocation</span><span class="p">(</span><span class="nx">fragment</span><span class="p">);</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-77"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-77">&#182;</a> </div> <p>Bind all defined routes to <code>Backbone.history</code>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">_bindRoutes</span> <span class="o">:</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="k">this</span><span class="p">.</span><span class="nx">routes</span><span class="p">)</span> <span class="k">return</span><span class="p">;</span>
<span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">route</span> <span class="k">in</span> <span class="k">this</span><span class="p">.</span><span class="nx">routes</span><span class="p">)</span> <span class="p">{</span>
<span class="kd">var</span> <span class="nx">name</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">routes</span><span class="p">[</span><span class="nx">route</span><span class="p">];</span>
<span class="k">this</span><span class="p">.</span><span class="nx">route</span><span class="p">(</span><span class="nx">route</span><span class="p">,</span> <span class="nx">name</span><span class="p">,</span> <span class="k">this</span><span class="p">[</span><span class="nx">name</span><span class="p">]);</span>
<span class="p">}</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-78"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-78">&#182;</a> </div> <p>Convert a route string into a regular expression, suitable for matching
against the current location fragment.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">_routeToRegExp</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">route</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">route</span> <span class="o">=</span> <span class="nx">route</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">namedParam</span><span class="p">,</span> <span class="s2">&quot;([^\/]*)&quot;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="nx">splatParam</span><span class="p">,</span> <span class="s2">&quot;(.*?)&quot;</span><span class="p">);</span>
<span class="k">return</span> <span class="k">new</span> <span class="nb">RegExp</span><span class="p">(</span><span class="s1">&#39;^&#39;</span> <span class="o">+</span> <span class="nx">route</span> <span class="o">+</span> <span class="s1">&#39;$&#39;</span><span class="p">);</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-79"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-79">&#182;</a> </div> <p>Given a route, and a URL fragment that it matches, return the array of
extracted parameters.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">_extractParameters</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">route</span><span class="p">,</span> <span class="nx">fragment</span><span class="p">)</span> <span class="p">{</span>
<span class="k">return</span> <span class="nx">route</span><span class="p">.</span><span class="nx">exec</span><span class="p">(</span><span class="nx">fragment</span><span class="p">).</span><span class="nx">slice</span><span class="p">(</span><span class="mi">1</span><span class="p">);</span>
<span class="p">}</span>
<span class="p">});</span></pre></div> </td> </tr> <tr id="section-80"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-80">&#182;</a> </div> <h2>Backbone.History</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-81"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-81">&#182;</a> </div> <p>Handles cross-browser history management, based on URL hashes. If the
browser does not support <code>onhashchange</code>, falls back to polling.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Backbone</span><span class="p">.</span><span class="nx">History</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">handlers</span> <span class="o">=</span> <span class="p">[];</span>
<span class="k">this</span><span class="p">.</span><span class="nx">fragment</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">getFragment</span><span class="p">();</span>
<span class="nx">_</span><span class="p">.</span><span class="nx">bindAll</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="s1">&#39;checkUrl&#39;</span><span class="p">);</span>
<span class="p">};</span></pre></div> </td> </tr> <tr id="section-82"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-82">&#182;</a> </div> <p>Cached regex for cleaning hashes.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="kd">var</span> <span class="nx">hashStrip</span> <span class="o">=</span> <span class="sr">/^#*/</span><span class="p">;</span></pre></div> </td> </tr> <tr id="section-83"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-83">&#182;</a> </div> <p>Set up all inheritable <strong>Backbone.History</strong> properties and methods.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span><span class="p">(</span><span class="nx">Backbone</span><span class="p">.</span><span class="nx">History</span><span class="p">.</span><span class="nx">prototype</span><span class="p">,</span> <span class="p">{</span></pre></div> </td> </tr> <tr id="section-84"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-84">&#182;</a> </div> <p>The default interval to poll for hash changes, if necessary, is
twenty times a second.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">interval</span><span class="o">:</span> <span class="mi">50</span><span class="p">,</span></pre></div> </td> </tr> <tr id="section-85"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-85">&#182;</a> </div> <p>Get the cross-browser normalized URL fragment.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">getFragment</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">loc</span><span class="p">)</span> <span class="p">{</span>
<span class="k">return</span> <span class="p">(</span><span class="nx">loc</span> <span class="o">||</span> <span class="nb">window</span><span class="p">.</span><span class="nx">location</span><span class="p">).</span><span class="nx">hash</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">hashStrip</span><span class="p">,</span> <span class="s1">&#39;&#39;</span><span class="p">);</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-86"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-86">&#182;</a> </div> <p>Start the hash change handling, returning <code>true</code> if the current URL matches
an existing route, and <code>false</code> otherwise.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">start</span> <span class="o">:</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
<span class="kd">var</span> <span class="nx">docMode</span> <span class="o">=</span> <span class="nb">document</span><span class="p">.</span><span class="nx">documentMode</span><span class="p">;</span>
<span class="kd">var</span> <span class="nx">oldIE</span> <span class="o">=</span> <span class="p">(</span><span class="nx">$</span><span class="p">.</span><span class="nx">browser</span><span class="p">.</span><span class="nx">msie</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="o">!</span><span class="nx">docMode</span> <span class="o">||</span> <span class="nx">docMode</span> <span class="o">&lt;=</span> <span class="mi">7</span><span class="p">));</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">oldIE</span><span class="p">)</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">iframe</span> <span class="o">=</span> <span class="nx">$</span><span class="p">(</span><span class="s1">&#39;&lt;iframe src=&quot;javascript:0&quot; tabindex=&quot;-1&quot; /&gt;&#39;</span><span class="p">).</span><span class="nx">hide</span><span class="p">().</span><span class="nx">appendTo</span><span class="p">(</span><span class="s1">&#39;body&#39;</span><span class="p">)[</span><span class="mi">0</span><span class="p">].</span><span class="nx">contentWindow</span><span class="p">;</span>
<span class="p">}</span>
<span class="k">if</span> <span class="p">(</span><span class="s1">&#39;onhashchange&#39;</span> <span class="k">in</span> <span class="nb">window</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">oldIE</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">$</span><span class="p">(</span><span class="nb">window</span><span class="p">).</span><span class="nx">bind</span><span class="p">(</span><span class="s1">&#39;hashchange&#39;</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">checkUrl</span><span class="p">);</span>
<span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
<span class="nx">setInterval</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">checkUrl</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">interval</span><span class="p">);</span>
<span class="p">}</span>
<span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">loadUrl</span><span class="p">();</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-87"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-87">&#182;</a> </div> <p>Add a route to be tested when the hash changes. Routes are matched in the
order they are added.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">route</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">route</span><span class="p">,</span> <span class="nx">callback</span><span class="p">)</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">handlers</span><span class="p">.</span><span class="nx">push</span><span class="p">({</span><span class="nx">route</span> <span class="o">:</span> <span class="nx">route</span><span class="p">,</span> <span class="nx">callback</span> <span class="o">:</span> <span class="nx">callback</span><span class="p">});</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-88"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-88">&#182;</a> </div> <p>Checks the current URL to see if it has changed, and if it has,
calls <code>loadUrl</code>, normalizing across the hidden iframe.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">checkUrl</span> <span class="o">:</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
<span class="kd">var</span> <span class="nx">current</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">getFragment</span><span class="p">();</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">current</span> <span class="o">==</span> <span class="k">this</span><span class="p">.</span><span class="nx">fragment</span> <span class="o">&amp;&amp;</span> <span class="k">this</span><span class="p">.</span><span class="nx">iframe</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">current</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">getFragment</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">iframe</span><span class="p">.</span><span class="nx">location</span><span class="p">);</span>
<span class="p">}</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">current</span> <span class="o">==</span> <span class="k">this</span><span class="p">.</span><span class="nx">fragment</span> <span class="o">||</span>
<span class="nx">current</span> <span class="o">==</span> <span class="nb">decodeURIComponent</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">fragment</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">iframe</span><span class="p">)</span> <span class="p">{</span>
<span class="nb">window</span><span class="p">.</span><span class="nx">location</span><span class="p">.</span><span class="nx">hash</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">iframe</span><span class="p">.</span><span class="nx">location</span><span class="p">.</span><span class="nx">hash</span> <span class="o">=</span> <span class="nx">current</span><span class="p">;</span>
<span class="p">}</span>
<span class="k">this</span><span class="p">.</span><span class="nx">loadUrl</span><span class="p">();</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-89"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-89">&#182;</a> </div> <p>Attempt to load the current URL fragment. If a route succeeds with a
match, returns <code>true</code>. If no defined routes matches the fragment,
returns <code>false</code>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">loadUrl</span> <span class="o">:</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
<span class="kd">var</span> <span class="nx">fragment</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">fragment</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">getFragment</span><span class="p">();</span>
<span class="kd">var</span> <span class="nx">matched</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">any</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">handlers</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">handler</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">handler</span><span class="p">.</span><span class="nx">route</span><span class="p">.</span><span class="nx">test</span><span class="p">(</span><span class="nx">fragment</span><span class="p">))</span> <span class="p">{</span>
<span class="nx">handler</span><span class="p">.</span><span class="nx">callback</span><span class="p">(</span><span class="nx">fragment</span><span class="p">);</span>
<span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
<span class="p">}</span>
<span class="p">});</span>
<span class="k">return</span> <span class="nx">matched</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-90"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-90">&#182;</a> </div> <p>Save a fragment into the hash history. You are responsible for properly
URL-encoding the fragment in advance. This does not trigger
a <code>hashchange</code> event.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">saveLocation</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">fragment</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">fragment</span> <span class="o">=</span> <span class="p">(</span><span class="nx">fragment</span> <span class="o">||</span> <span class="s1">&#39;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="nx">hashStrip</span><span class="p">,</span> <span class="s1">&#39;&#39;</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">fragment</span> <span class="o">==</span> <span class="nx">fragment</span><span class="p">)</span> <span class="k">return</span><span class="p">;</span>
<span class="nb">window</span><span class="p">.</span><span class="nx">location</span><span class="p">.</span><span class="nx">hash</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">fragment</span> <span class="o">=</span> <span class="nx">fragment</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">iframe</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">fragment</span> <span class="o">!=</span> <span class="k">this</span><span class="p">.</span><span class="nx">getFragment</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">iframe</span><span class="p">.</span><span class="nx">location</span><span class="p">)))</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">iframe</span><span class="p">.</span><span class="nb">document</span><span class="p">.</span><span class="nx">open</span><span class="p">().</span><span class="nx">close</span><span class="p">();</span>
<span class="k">this</span><span class="p">.</span><span class="nx">iframe</span><span class="p">.</span><span class="nx">location</span><span class="p">.</span><span class="nx">hash</span> <span class="o">=</span> <span class="nx">fragment</span><span class="p">;</span>
<span class="p">}</span>
<span class="p">}</span>
<span class="p">});</span></pre></div> </td> </tr> <tr id="section-91"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-91">&#182;</a> </div> <h2>Backbone.View</h2> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-92"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-92">&#182;</a> </div> <p>Creating a Backbone.View creates its initial element outside of the DOM,
if an existing element is not provided...</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">Backbone</span><span class="p">.</span><span class="nx">View</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">options</span><span class="p">)</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_configure</span><span class="p">(</span><span class="nx">options</span> <span class="o">||</span> <span class="p">{});</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_ensureElement</span><span class="p">();</span>
<span class="k">this</span><span class="p">.</span><span class="nx">delegateEvents</span><span class="p">();</span>
<span class="k">this</span><span class="p">.</span><span class="nx">initialize</span><span class="p">(</span><span class="nx">options</span><span class="p">);</span>
<span class="p">};</span></pre></div> </td> </tr> <tr id="section-93"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-93">&#182;</a> </div> <p>jQuery lookup, scoped to DOM elements within the current view.
This should be prefered to global jQuery lookups, if you're dealing with
a specific view.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="kd">var</span> <span class="nx">jQueryDelegate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">selector</span><span class="p">)</span> <span class="p">{</span>
<span class="k">return</span> <span class="nx">$</span><span class="p">(</span><span class="nx">selector</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">el</span><span class="p">);</span>
<span class="p">};</span></pre></div> </td> </tr> <tr id="section-94"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-94">&#182;</a> </div> <p>Cached regex to split keys for <code>delegate</code>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="kd">var</span> <span class="nx">eventSplitter</span> <span class="o">=</span> <span class="sr">/^(\w+)\s*(.*)$/</span><span class="p">;</span></pre></div> </td> </tr> <tr id="section-95"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-95">&#182;</a> </div> <p>Set up all inheritable <strong>Backbone.View</strong> properties and methods.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span><span class="p">(</span><span class="nx">Backbone</span><span class="p">.</span><span class="nx">View</span><span class="p">.</span><span class="nx">prototype</span><span class="p">,</span> <span class="nx">Backbone</span><span class="p">.</span><span class="nx">Events</span><span class="p">,</span> <span class="p">{</span></pre></div> </td> </tr> <tr id="section-96"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-96">&#182;</a> </div> <p>The default <code>tagName</code> of a View's element is <code>"div"</code>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">tagName</span> <span class="o">:</span> <span class="s1">&#39;div&#39;</span><span class="p">,</span></pre></div> </td> </tr> <tr id="section-97"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-97">&#182;</a> </div> <p>Attach the jQuery function as the <code>$</code> and <code>jQuery</code> properties.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">$</span> <span class="o">:</span> <span class="nx">jQueryDelegate</span><span class="p">,</span>
<span class="nx">jQuery</span> <span class="o">:</span> <span class="nx">jQueryDelegate</span><span class="p">,</span></pre></div> </td> </tr> <tr id="section-98"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-98">&#182;</a> </div> <p>Initialize is an empty function by default. Override it with your own
initialization logic.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">initialize</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(){},</span></pre></div> </td> </tr> <tr id="section-99"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-99">&#182;</a> </div> <p><strong>render</strong> is the core function that your view should override, in order
to populate its element (<code>this.el</code>), with the appropriate HTML. The
convention is for <strong>render</strong> to always return <code>this</code>.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">render</span> <span class="o">:</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
<span class="k">return</span> <span class="k">this</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-100"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-100">&#182;</a> </div> <p>Remove this view from the DOM. Note that the view isn't present in the
DOM by default, so calling this method may be a no-op.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">remove</span> <span class="o">:</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
<span class="nx">$</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">el</span><span class="p">).</span><span class="nx">remove</span><span class="p">();</span>
<span class="k">return</span> <span class="k">this</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-101"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-101">&#182;</a> </div> <p>For small amounts of DOM Elements, where a full-blown template isn't
needed, use <strong>make</strong> to manufacture elements, one at a time.</p>
<pre><code>var el = this.make('li', {'class': 'row'}, this.model.get('title'));
</code></pre> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">make</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">tagName</span><span class="p">,</span> <span class="nx">attributes</span><span class="p">,</span> <span class="nx">content</span><span class="p">)</span> <span class="p">{</span>
<span class="kd">var</span> <span class="nx">el</span> <span class="o">=</span> <span class="nb">document</span><span class="p">.</span><span class="nx">createElement</span><span class="p">(</span><span class="nx">tagName</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">attributes</span><span class="p">)</span> <span class="nx">$</span><span class="p">(</span><span class="nx">el</span><span class="p">).</span><span class="nx">attr</span><span class="p">(</span><span class="nx">attributes</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">content</span><span class="p">)</span> <span class="nx">$</span><span class="p">(</span><span class="nx">el</span><span class="p">).</span><span class="nx">html</span><span class="p">(</span><span class="nx">content</span><span class="p">);</span>
<span class="k">return</span> <span class="nx">el</span><span class="p">;</span>
<span class="p">},</span></pre></div> </td> </tr> <tr id="section-102"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-102">&#182;</a> </div> <p>Set callbacks, where <code>this.callbacks</code> is a hash of</p>
<p><em>{"event selector": "callback"}</em></p>
<pre><code>{
'mousedown .title': 'edit',
'click .button': 'save'
}
</code></pre>
<p>pairs. Callbacks will be bound to the view, with <code>this</code> set properly.
Uses jQuery event delegation for efficiency.
Omitting the selector binds the event to <code>this.el</code>.
This only works for delegate-able events: not <code>focus</code>, <code>blur</code>, and
not <code>change</code>, <code>submit</code>, and <code>reset</code> in Internet Explorer.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">delegateEvents</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">events</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">events</span> <span class="o">||</span> <span class="p">(</span><span class="nx">events</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">events</span><span class="p">)))</span> <span class="k">return</span><span class="p">;</span>
<span class="nx">$</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">el</span><span class="p">).</span><span class="nx">unbind</span><span class="p">();</span>
<span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">events</span><span class="p">)</span> <span class="p">{</span>
<span class="kd">var</span> <span class="nx">methodName</span> <span class="o">=</span> <span class="nx">events</span><span class="p">[</span><span class="nx">key</span><span class="p">];</span>
<span class="kd">var</span> <span class="nx">match</span> <span class="o">=</span> <span class="nx">key</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">eventSplitter</span><span class="p">);</span>
<span class="kd">var</span> <span class="nx">eventName</span> <span class="o">=</span> <span class="nx">match</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="nx">selector</span> <span class="o">=</span> <span class="nx">match</span><span class="p">[</span><span class="mi">2</span><span class="p">];</span>
<span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="k">this</span><span class="p">[</span><span class="nx">methodName</span><span class="p">],</span> <span class="k">this</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">selector</span> <span class="o">===</span> <span class="s1">&#39;&#39;</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">$</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">el</span><span class="p">).</span><span class="nx">bind</span><span class="p">(</span><span class="nx">eventName</span><span class="p">,</span> <span class="nx">method</span><span class="p">);</span>
<span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
<span class="nx">$</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">el</span><span class="p">).</span><span class="nx">delegate</span><span class="p">(</span><span class="nx">selector</span><span class="p">,</span> <span class="nx">eventName</span><span class="p"&