<!doctype html>
<title>CodeMirror: User Manual</title>
<meta charset="utf-8"/>
<link rel=stylesheet href="docs.css">
<script src="activebookmark.js"></script>
<script src="../lib/codemirror.js"></script>
<link rel="stylesheet" href="../lib/codemirror.css">
<script src="../addon/runmode/runmode.js"></script>
<script src="../addon/runmode/colorize.js"></script>
<script src="../mode/javascript/javascript.js"></script>
<script src="../mode/xml/xml.js"></script>
<script src="../mode/css/css.js"></script>
<script src="../mode/htmlmixed/htmlmixed.js"></script>
<style>
dt { text-indent: -2em; padding-left: 2em; margin-top: 1em; }
dd { margin-left: 1.5em; margin-bottom: 1em; }
dt {margin-top: 1em;}
dd dl, dd dt, dd dd, dd ul { margin-top: 0; margin-bottom: 0; }
dt + dt { margin-top: 0; }
dt.command { position: relative; }
span.keybinding { position: absolute; right: 0; font-size: 80%; color: #555; text-indent: 0; }
</style>
<div id=nav>
<a href="http://codemirror.net"><img id=logo src="logo.png"></a>
<ul>
<li><a href="../index.html">Home</a></li>
<li><a href="#overview" class=active data-default="true">Manual</a></li>
<li><a href="https://github.com/marijnh/codemirror">Code</a></li>
</ul>
<ul>
<li><a href="#usage">Basic Usage</a></li>
<li><a href="#config">Configuration</a></li>
<li><a href="#events">Events</a></li>
<li><a href="#keymaps">Key maps</a></li>
<li><a href="#commands">Commands</a></li>
<li><a href="#styling">Customized Styling</a></li>
<li><a href="#api">Programming API</a>
<ul>
<li><a href="#api_constructor">Constructor</a></li>
<li><a href="#api_content">Content manipulation</a></li>
<li><a href="#api_selection">Selection</a></li>
<li><a href="#api_configuration">Configuration</a></li>
<li><a href="#api_doc">Document management</a></li>
<li><a href="#api_history">History</a></li>
<li><a href="#api_marker">Text-marking</a></li>
<li><a href="#api_decoration">Widget, gutter, and decoration</a></li>
<li><a href="#api_sizing">Sizing, scrolling, and positioning</a></li>
<li><a href="#api_mode">Mode, state, and tokens</a></li>
<li><a href="#api_misc">Miscellaneous methods</a></li>
<li><a href="#api_static">Static properties</a></li>
</ul>
</li>
<li><a href="#addons">Addons</a></li>
<li><a href="#modeapi">Writing CodeMirror Modes</a></li>
</ul>
</div>
<article>
<section class=first id=overview>
<h2 style="position: relative">
User manual and reference guide
<span style="color: #888; font-size: 1rem; position: absolute; right: 0; bottom: 0">version 4.2.0</span>
</h2>
<p>CodeMirror is a code-editor component that can be embedded in
Web pages. The core library provides <em>only</em> the editor
component, no accompanying buttons, auto-completion, or other IDE
functionality. It does provide a rich API on top of which such
functionality can be straightforwardly implemented. See
the <a href="#addons">addons</a> included in the distribution,
and the <a href="https://github.com/marijnh/CodeMirror/wiki/CodeMirror-addons">list
of externally hosted addons</a>, for reusable
implementations of extra features.</p>
<p>CodeMirror works with language-specific modes. Modes are
JavaScript programs that help color (and optionally indent) text
written in a given language. The distribution comes with a number
of modes (see the <a href="../mode/"><code>mode/</code></a>
directory), and it isn't hard to <a href="#modeapi">write new
ones</a> for other languages.</p>
</section>
<section id=usage>
<h2>Basic Usage</h2>
<p>The easiest way to use CodeMirror is to simply load the script
and style sheet found under <code>lib/</code> in the distribution,
plus a mode script from one of the <code>mode/</code> directories.
(See <a href="compress.html">the compression helper</a> for an
easy way to combine scripts.) For example:</p>
<pre data-lang="text/html"><script src="lib/codemirror.js"></script>
<link rel="stylesheet" href="../lib/codemirror.css">
<script src="mode/javascript/javascript.js"></script></pre>
<p>(Alternatively, use a module loader. <a href="#modloader">More
about that later.</a>)</p>
<p>Having done this, an editor instance can be created like
this:</p>
<pre data-lang="javascript">var myCodeMirror = CodeMirror(document.body);</pre>
<p>The editor will be appended to the document body, will start
empty, and will use the mode that we loaded. To have more control
over the new editor, a configuration object can be passed
to <a href="#CodeMirror"><code>CodeMirror</code></a> as a second
argument:</p>
<pre data-lang="javascript">var myCodeMirror = CodeMirror(document.body, {
value: "function myScript(){return 100;}\n",
mode: "javascript"
});</pre>
<p>This will initialize the editor with a piece of code already in
it, and explicitly tell it to use the JavaScript mode (which is
useful when multiple modes are loaded).
See <a href="#config">below</a> for a full discussion of the
configuration options that CodeMirror accepts.</p>
<p>In cases where you don't want to append the editor to an
element, and need more control over the way it is inserted, the
first argument to the <code>CodeMirror</code> function can also
be a function that, when given a DOM element, inserts it into the
document somewhere. This could be used to, for example, replace a
textarea with a real editor:</p>
<pre data-lang="javascript">var myCodeMirror = CodeMirror(function(elt) {
myTextArea.parentNode.replaceChild(elt, myTextArea);
}, {value: myTextArea.value});</pre>
<p>However, for this use case, which is a common way to use
CodeMirror, the library provides a much more powerful
shortcut:</p>
<pre data-lang="javascript">var myCodeMirror = CodeMirror.fromTextArea(myTextArea);</pre>
<p>This will, among other things, ensure that the textarea's value
is updated with the editor's contents when the form (if it is part
of a form) is submitted. See the <a href="#fromTextArea">API
reference</a> for a full description of this method.</p>
<h3 id=modloader>Module loaders</h3>
<p>The files in the CodeMirror distribution contain shims for
loading them (and their dependencies) in AMD or CommonJS
environments. If the variables <code>exports</code>
and <code>module</code> exist and have type object, CommonJS-style
require will be used. If not, but there is a
function <code>define</code> with an <code>amd</code> property
present, AMD-style (RequireJS) will be used.</p>
<p>It is possible to
use <a href="http://browserify.org/">Browserify</a> or similar
tools to statically build modules using CodeMirror. Alternatively,
use <a href="http://requirejs.org/">RequireJS</a> to dynamically
load dependencies at runtime. Both of these approaches have the
advantage that they don't use the global namespace and can, thus,
do things like load multiple versions of CodeMirror alongside each
other.</p>
<p>Here's a simple example of using RequireJS to load CodeMirror:</p>
<pre data-lang="javascript">require([
"cm/lib/codemirror", "cm/mode/htmlmixed/htmlmixed"
], function(CodeMirror) {
CodeMirror.fromTextArea(document.getElementById("code"), {
lineNumbers: true,
mode: "htmlmixed"
});
});</pre>
<p>It will automatically load the modes that the mixed HTML mode
depends on (XML, JavaScript, and CSS).</p>
</section>
<section id=config>
<h2>Configuration</h2>
<p>Both the <a href="#CodeMirror"><code>CodeMirror</code></a>
function and its <code>fromTextArea</code> method take as second
(optional) argument an object containing configuration options.
Any option not supplied like this will be ta
codeMirror代码格式化（官方demo） （360个子文件） 
AUTHORS 4KB compress 3KB ambiance.css 25KB codemirror.css 6KB mdn-like.css 5KB solarized.css 4KB docs.css 4KB lint.css 3KB merge.css 3KB xq-dark.css 2KB xq-light.css 2KB lesser-dark.css 2KB pastel-on-dark.css 2KB tern.css 2KB tomorrow-night-eighties.css 2KB erlang-dark.css 2KB twilight.css 2KB midnight.css 2KB vibrant-ink.css 2KB base16-light.css 2KB base16-dark.css 2KB paraiso-light.css 2KB 3024-night.css 1KB paraiso-dark.css 1KB 3024-day.css 1KB blackboard.css 1KB the-matrix.css 1KB mbo.css 1KB night.css 1KB rubyblue.css 1KB monokai.css 1KB cobalt.css 1KB eclipse.css 1KB neo.css 814B elegant.css 768B neat.css 693B show-hint.css 660B dialog.css 502B foldgutter.css 450B tiki.css 440B mode_test.css 366B tiddlywiki.css 220B fullscreen.css 116B ambiance-mobile.css 103B .gitattributes 104B .gitignore 56B
manual.html 162KB releases.html 51KB scala.html 28KB internals.html 25KB index.html 22KB compress.html 20KB index.html 17KB index.html 13KB index.html 13KB realworld.html 12KB index.html 11KB index.html 10KB index.html 9KB index.html 9KB index.html 8KB upgrade_v3.html 8KB index.html 8KB index.html 8KB index.html 7KB index.html 6KB index.html 6KB index.html 6KB index.html 6KB index.html 5KB index.html 5KB upgrade_v4.html 5KB index.html 5KB index.html 5KB index.html 4KB index.html 4KB index.html 4KB index.html 4KB theme.html 4KB index.html 4KB tern.html 4KB index.html 4KB lint.html 4KB less.html 4KB search.html 4KB index.html 4KB xmlcomplete.html 4KB index.html 4KB buffers.html 3KB upgrade_v2.2.html 3KB bidi.html 3KB fullscreen.html 3KB index.html 3KB merge.html 3KB folding.html 3KB index.html 3KB index.html 3KB index.html 3KB index.html 3KB spanaffectswrapping_shim.html 3KB共 360 条
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