Remove tryruby answer

Author: sunny

source/index.html.markdown

@@ -29,7 +29,7 @@ description: Learn to program in Ruby in 30 minutes
     </div>
 
     <select id="tryruby-index" class="form-control"></select>
-  
+
     <div id="tryruby-explanation">
 
       <h2 id="tryruby-title">Got 30 minutes? Give Ruby a shot right now!</h2>
@@ -38,7 +38,7 @@ description: Learn to program in Ruby in 30 minutes
         <p>Ruby is a programming language from Japan which is revolutionizing software development.</p>
         <p>The beauty of Ruby is found in its balance between simplicity and power.</p>
         <p>You can type some Ruby code in the editor and use these buttons to navigate:</p>
-        
+
         <ul>
           <li><strong>Run</strong> &rarr; Executes the code in the editor</li>
           <li><strong>Copy</strong> &rarr; Copies the example code to the editor</li>
@@ -49,9 +49,6 @@ description: Learn to program in Ruby in 30 minutes
 
         <h3>Click on <strong>Next</strong> to start learning.</h3>
       </div>
-
-      <div id="tryruby-answer" style="display:none"></div>
-
     </div>
   </div>
 

source/javascripts/try_ruby.js.rb

@@ -5,6 +5,7 @@
 require 'promise'
 require 'browser/setup/full'
 require 'browser/cookies'
+require 'browser/form_data'
 
 # Container for individual lessons
 class TryRubyItem
@@ -334,9 +335,10 @@ def do_change_lang
 
   # Playground methods
   def get_code_from_url
-    hash = $$.decodeURIComponent($$[:location][:hash].gsub('+', ' '))
+    hash = $document.location.fragment.to_s
+    hash = Browser::FormData.decode(hash.gsub('+', ' '))
 
-    hash['#code='.size..-1] if hash.start_with?('#code=')
+    hash.delete_prefix("#code=") if hash.start_with?('#code=')
   end
 
   def do_copy_url
@@ -381,7 +383,6 @@ def update_screen(item)
     @updating = true
     title_element.inner_html = item.title
     $document.at_css('#tryruby-content').inner_html = item.text
-    $document.at_css('#tryruby-answer').inner_html  = item.answer
     @editor.value = item.saved_editor if @editor
     @output.value = item.saved_output if @output
     @current_copycode = get_code_fragment(item.text)