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<h1><span class="logo-braces">{ }</span> <a href="">CodeMirror</a></h1>
<pre class="grey">
<img src="css/baboon.png" class="logo" alt="logo"/>/* In-browser code editing
made bearable */
<div class="clear"><div class="left blk">
<p style="margin-top: 0">CodeMirror is a JavaScript library that can
be used to create a relatively pleasant editor interface for
code-like content &#x2015; computer programs, HTML markup, and
similar. If a mode has been written for the language you are
editing, the code will be coloured, and the editor will optionally
help you with indentation.</p>
<p>This is the project page for CodeMirror 2, the currently more
actively developed, and recommended
version. <a href="1/index.html">CodeMirror 1</a> is still available
from here.</p>
<div class="clear"><div class="left1 blk">
<h2 style="margin-top: 0">Supported modes:</h2>
<li><a href="mode/clike/index.html">C, Java, C#, and similar</a></li>
<li><a href="mode/clojure/index.html">Clojure</a></li>
<li><a href="mode/coffeescript/index.html">CoffeeScript</a></li>
<li><a href="mode/css/index.html">CSS</a></li>
<li><a href="mode/diff/index.html">diff</a></li>
<li><a href="mode/groovy/index.html">Groovy</a></li>
<li><a href="mode/haskell/index.html">Haskell</a></li>
<li><a href="mode/htmlmixed/index.html">HTML mixed-mode</a></li>
<li><a href="mode/javascript/index.html">JavaScript</a></li>
<li><a href="mode/jinja2/index.html">Jinja2</a></li>
<li><a href="mode/lua/index.html">Lua</a></li>
<li><a href="mode/markdown/index.html">Markdown</a></li>
<li><a href="mode/ntriples/index.html">NTriples</a></li>
<li><a href="mode/pascal/index.html">Pascal</a></li>
<li><a href="mode/perl/index.html">Perl</a></li>
<li><a href="mode/php/index.html">PHP</a></li>
<li><a href="mode/plsql/index.html">PL/SQL</a></li>
<li><a href="mode/python/index.html">Python</a></li>
<li><a href="mode/r/index.html">R</a></li>
<li><a href="mode/rst/index.html">reStructuredText</a></li>
<li><a href="mode/ruby/index.html">Ruby</a></li>
<li><a href="mode/rust/index.html">Rust</a></li>
<li><a href="mode/scheme/index.html">Scheme</a></li>
<li><a href="mode/smalltalk/index.html">Smalltalk</a></li>
<li><a href="mode/sparql/index.html">SPARQL</a></li>
<li><a href="mode/stex/index.html">sTeX, LaTeX</a></li>
<li><a href="mode/tiddlywiki/index.html">Tiddlywiki</a></li>
<li><a href="mode/velocity/index.html">Velocity</a></li>
<li><a href="mode/xml/index.html">XML/HTML</a> (<a href="mode/xmlpure/index.html">alternative XML</a>)</li>
<li><a href="mode/yaml/index.html">YAML</a></li>
</div><div class="left2 blk">
<h2 style="margin-top: 0">Usage demos:</h2>
<li><a href="demo/complete.html">Autocompletion</a></li>
<li><a href="demo/mustache.html">Mode overlays</a></li>
<li><a href="demo/search.html">Search/replace</a></li>
<li><a href="demo/preview.html">HTML editor with preview</a></li>
<li><a href="demo/resize.html">Auto-resizing editor</a></li>
<li><a href="demo/marker.html">Setting breakpoints</a></li>
<li><a href="demo/activeline.html">Highlighting the current line</a></li>
<li><a href="demo/theme.html">Theming</a></li>
<li><a href="demo/runmode.html">Stand-alone highlighting</a></li>
<li><a href="demo/fullscreen.html">Full-screen editing</a></li>
<li><a href="demo/changemode.html">Mode auto-changing</a></li>
<h2 id="code">Getting the code</h2>
<p>All of CodeMirror is released under a <a
href="LICENSE">MIT-style</a> license. To get it, you can download
the <a href="">latest
release</a> or the current <a
snapshot</a> as zip files. To create a custom minified script file,
you can use the <a href="compress.html">compression API</a>.</p>
<p>We use <a href="">git</a> for version control.
The main repository can be fetched in this way:</p>
<pre class="code">git clone</pre>
<p>CodeMirror can also be found on GitHub at <a
If you plan to hack on the code and contribute patches, the best way
to do it is to create a GitHub fork, and send pull requests.</p>
<h2 id="documention">Documentation</h2>
<p>The <a href="manual.html">manual</a> is your first stop for
learning how to use this library. It starts with a quick explanation
of how to use the editor, and then describes all of the (many)
options and methods that CodeMirror exposes.</p>
<p>For those who want to learn more about the code, there is
an <a href="internals.html">overview of the internals</a> available.
The <a href="">source code</a>
itself is, for the most part, also well commented.</p>
<h2 id="support">Support and bug reports</h2>
<p>There is
a <a href="">Google
group</a> (a sort of mailing list/newsgroup thing) for discussion
and news related to CodeMirror. Reporting bugs is best done
on <a href="">github</a>.
You can also e-mail me
directly: <a href="">Marijn
<h2 id="supported">Supported browsers</h2>
<p>The following browsers are able to run CodeMirror:</p>
<li>Firefox 2 or higher</li>
<li>Chrome, any version</li>
<li>Safari 3 or higher</li>
<li>Internet Explorer 6 or higher</li>
<li>Opera 9 or higher (with some key-handling problems on OS X)</li>
<p>I am not actively testing against every new browser release, and
vendors have a habit of introducing bugs all the time, so I am
relying on the community to tell me when something breaks.
See <a href="#support">here</a> for information on how to contact
<div class="right blk">
<a href="" class="download">Download the latest release</a>
<h2>Make a donation</h2>
<li><span onclick="document.getElementById('paypal').submit();" class="quasilink">Paypal</span></li>
<li><span onclick="document.getElementById('bankinfo').style.display = 'block';" class="quasilink">Bank</span></li>
<p id="bankinfo" style="display: none;">
Bank: <i>Rabobank</i><br/>
Country: <i>Netherlands</i><br/>
SWIFT: <i>RABONL2U</i><br/>
Account: <i>147850770</i><br/>
Name: <i>Marijn Haverbeke</i><br/>
IBAN: <i>NL26 RABO 0147 8507 70</i>
<p class="rel">27-10-2011: <a href="">Version 2.16</a>:</p>
<ul class="rel-note">
<li>Add <a href="mode/perl/index.html">Perl</a>, <a href="mode/rust/index.html">Rust</a>, <a href="mode/tiddlywiki/index.html">TiddlyWiki</a>, and <a href="mode/groovy/index.html">Groovy</a> modes.</li>
<li>Dragging text inside the editor now moves, rather than copies.</li>
<li>Add a <a href="manual.html#coordsFromIndex"><code>coordsFromIndex</code></a> method.</li>
<li><strong>API change</strong>: <code>setValue</code> now no longer clears history. Use <a href="manual.html#clearHistory"><code>clearHistory</code></a> for that.</li>
<li><strong>API change</strong>: <a href="manual.html#markText"><code>markText</code></a> now
returns an object with <code>clear</code> and <code>find</code>
methods. Marked text is now more robust when edited.</li>
<li>Fix editing code with tabs in Internet Explorer.</li>
<p class="rel">26-09-2011: <a href="">Version 2.15</a>:</p>
<p class="rel-note">Fix bug that snuck into 2.14: Clicking the
character that currently has the cursor didn't re-focus the
<p class="rel">26-09-2011: <a href="">Version 2.14</a>:</p>
<ul class="rel-note">
<li>Add <a href="mode/clojure/index.html">Clojure</a>, <a href="mode/pascal/index.html">Pascal</a>, <a href="mode/ntriples/index.html">NTriples</a>, <a href="mode/jinja2/index.html">Jinja2</a>, and <a href="mode/markdown/index.html">Markdown</a> modes.</li>
<li>Add <a href="theme/cobalt.css">Cobalt</a> and <a href="theme/eclipse.css">Eclipse</a> themes.</li>
<li>Add a <a href="manual.html#option_fixedGutter"><code>fixedGutter</code></a> option.</li>
<li>Fix bug with <code>setValue</code> breaking cursor movement.</li>
<li>Make gutter updates much more efficient.</li>
<li>Allow dragging of text out of the editor (on modern browsers).</li>
<p class="rel">23-08-2011: <a href="">Version 2.13</a>:</p>
<ul class="rel-note">
<li>Add <a href="mode/ruby/index.html">Ruby</a>, <a href="mode/r/index.html">R</a>, <a href="mode/coffeescript/index.html">CoffeeScript</a>, and <a href="mode/velocity/index.html">Velocity</a> modes.</li>
<li>Add <a href="manual.html#getGutterElement"><code>getGutterElement</code></a> to API.</li>
<li>Several fixes to scrolling and positioning.</li>
<li>Add <a href="manual.html#option_smartHome"><code>smartHome</code></a> option.</li>
<li>Add an experimental <a href="mode/xmlpure/index.html">pure XML</a> mode.</li>
<p class="rel">25-07-2011: <a href="">Version 2.12</a>:</p>
<ul class="rel-note">
<li>Add a <a href="mode/sparql/index.html">SPARQL</a> mode.</li>
<li>Fix bug with cursor jumping around in an unfocused editor in IE.</li>
<li>Allow key and mouse events to bubble out of the editor. Ignore widget clicks.</li>
<li>Solve cursor flakiness after undo/redo.</li>
<li>Fix block-reindent ignoring the last few lines.</li>
<li>Fix parsing of multi-line attrs in XML mode.</li>
<li>Use <code>innerHTML</code> for HTML-escaping.</li>
<li>Some fixes to indentation in C-like mode.</li>
<li>Shrink horiz scrollbars when long lines removed.</li>
<li>Fix width feedback loop bug that caused the width of an inner DIV to shrink.</li>
<p class="rel">04-07-2011: <a href="">Version 2.11</a>:</p>
<ul class="rel-note">
<li>Add a <a href="mode/scheme/index.html">Scheme mode</a>.</li>
<li>Add a <code>replace</code> method to search cursors, for cursor-preserving replacements.</li>
<li>Make the <a href="mode/clike/index.html">C-like mode</a> mode more customizeable.</li>
<li>Update XML mode to spot mismatched tags.</li>
<li>Add <code>getStateAfter</code> API and <code>compareState</code> mode API methods for finer-grained mode magic.</li>
<li>Add a <code>getScrollerElement</code> API method to manipulate the scrolling DIV.</li>
<li>Fix drag-and-drop for Firefox.</li>
<li>Add a C# configuration for the <a href="mode/clike/index.html">C-like mode</a>.</li>
<li>Add <a href="demo/fullscreen.html">full-screen editing</a> and <a href="demo/changemode.html">mode-changing</a> demos.</li>
<p class="rel">07-06-2011: <a href="">Version 2.1</a>:</p>
<p class="rel-note">Add
a <a href="manual.html#option_theme">theme</a> system
(<a href="demo/theme.html">demo</a>). Note that this is not
backwards-compatible—you'll have to update your styles and
<p class="rel">07-06-2011: <a href="">Version 2.02</a>:</p>
<ul class="rel-note">
<li>Add a <a href="mode/lua/index.html">Lua mode</a>.</li>
<li>Fix reverse-searching for a regexp.</li>
<li>Empty lines can no longer break highlighting.</li>
<li>Rework scrolling model (the outer wrapper no longer does the scrolling).</li>
<li>Solve horizontal jittering on long lines.</li>
<li>Add <a href="demo/runmode.html">runmode.js</a>.</li>
<li>Immediately re-highlight text when typing.</li>
<li>Fix problem with 'sticking' horizontal scrollbar.</li>
<p><a href="oldrelease.html">Older releases...</a></p>
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