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    <title>Javascript code prettifier</title>

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    <small style="float: right">Languages : <a href="README-zh-Hans.html">CH</a></small>
    <h1>Javascript code prettifier</h1>

    <h2>Setup</h2>
    <ol>
      <li><a href="http://code.google.com/p/google-code-prettify/downloads/list">Download</a> a distribution
      <li>Include the script and stylesheets in your document
        (you will need to make sure the css and js file are on your server, and
         adjust the paths in the <tt>script</tt> and <tt>link</tt> tag)
        <pre class="prettyprint">
&lt;link href="prettify.css" type="text/css" rel="stylesheet" /&gt;
&lt;script type="text/javascript" src="prettify.js"&gt;&lt;/script&gt;</pre>
      <li>Add <code class="prettyprint lang-in.tag">onload="prettyPrint()"</code> to your
      document's body tag.
      <li>Modify the stylesheet to get the coloring you prefer</li>
    </ol>

    <h2>Usage</h2>
    <p>Put code snippets in
    <tt>&lt;pre class="prettyprint"&gt;...&lt;/pre&gt;</tt>
    or <tt>&lt;code class="prettyprint"&gt;...&lt;/code&gt;</tt>
    and it will automatically be pretty printed.

    <table summary="code examples">
      <tr>
        <th>The original
        <th>Prettier
      <tr>
        <td><pre style="border: 1px solid #888;padding: 2px"
             ><a name="voila1"></a>class Voila {
public:
  // Voila
  static const string VOILA = "Voila";

  // will not interfere with embedded <a href="#voila1">tags</a>.
}</pre>

        <td><pre class="prettyprint"><a name="voila2"></a>class Voila {
public:
  // Voila
  static const string VOILA = "Voila";

  // will not interfere with embedded <a href="#voila2">tags</a>.
}</pre>
    </table>

    <h2>FAQ</h2>
    <h3 id="langs">For which languages does it work?</h3>
    <p>The comments in <tt>prettify.js</tt> are authoritative but the lexer
    should work on a number of languages including C and friends,
    Java, Python, Bash, SQL, HTML, XML, CSS, Javascript, and Makefiles.
    It works passably on Ruby, PHP, VB, and Awk and a decent subset of Perl
    and Ruby, but, because of commenting conventions, doesn't work on
    Smalltalk, or CAML-like languages.</p>

    <p>LISPy languages are supported via an extension:
    <a href="http://code.google.com/p/google-code-prettify/source/browse/trunk/src/lang-lisp.js"
     ><code>lang-lisp.js</code></a>.</p>
    <p>And similarly for
    <a href="http://code.google.com/p/google-code-prettify/source/browse/trunk/src/lang-clj.js"
     ><code>Clojure</code></a>,
    <a href="http://code.google.com/p/google-code-prettify/source/browse/trunk/src/lang-css.js"
     ><code>CSS</code></a>,
    <a href="http://code.google.com/p/google-code-prettify/source/browse/trunk/src/lang-go.js"
     ><code>Go</code></a>,
    <a href="http://code.google.com/p/google-code-prettify/source/browse/trunk/src/lang-hs.js"
     ><code>Haskell</code></a>,
    <a href="http://code.google.com/p/google-code-prettify/source/browse/trunk/src/lang-lua.js"
     ><code>Lua</code></a>,
    <a href="http://code.google.com/p/google-code-prettify/source/browse/trunk/src/lang-ml.js"
     ><code>OCAML, SML, F#</code></a>,
    <a href="http://code.google.com/p/google-code-prettify/source/browse/trunk/src/lang-n.js"
     ><code>Nemerle</code></a>,
    <a href="http://code.google.com/p/google-code-prettify/source/browse/trunk/src/lang-proto.js"
     ><code>Protocol Buffers</code></a>,
    <a href="http://code.google.com/p/google-code-prettify/source/browse/trunk/src/lang-scala.js"
     ><code>Scala</code></a>,
    <a href="http://code.google.com/p/google-code-prettify/source/browse/trunk/src/lang-sql.js"
     ><code>SQL</code></a>,
    <a href="http://code.google.com/p/google-code-prettify/source/browse/trunk/src/lang-tex.js"
     ><code>TeX, LaTeX</code></a>,
    <a href="http://code.google.com/p/google-code-prettify/source/browse/trunk/src/lang-vhdl.js"
     ><code>VHDL</code></a>,
    <a href="http://code.google.com/p/google-code-prettify/source/browse/trunk/src/lang-vb.js"
     ><code>Visual Basic</code></a>,
    <a href="http://code.google.com/p/google-code-prettify/source/browse/trunk/src/lang-wiki.js"
     ><code>WikiText</code></a>,
    <a href="http://code.google.com/p/google-code-prettify/source/browse/trunk/src/lang-xq.js"
     ><code>XQuery</code></a>, and
    <a href="http://code.google.com/p/google-code-prettify/source/browse/trunk/src/lang-yaml.js"
     ><code>YAML</code></a>.

    <p>If you'd like to add an extension for your favorite language, please
    look at <tt>src/lang-lisp.js</tt> and file an
    <a href="http://code.google.com/p/google-code-prettify/issues/list"
     >issue</a> including your language extension, and a testcase.</p>

    <h3>How do I specify the language of my code?</h3>
    <p>You don't need to specify the language since <code>prettyprint()</code>
    will guess.  You can specify a language by specifying the language extension
    along with the <code>prettyprint</code> class like so:</p>
    <pre class="prettyprint lang-html"
>&lt;pre class=&quot;prettyprint <b>lang-html</b>&quot;&gt;
  The lang-* class specifies the language file extensions.
  File extensions supported by default include
    "bsh", "c", "cc", "cpp", "cs", "csh", "cyc", "cv", "htm", "html",
    "java", "js", "m", "mxml", "perl", "pl", "pm", "py", "rb", "sh",
    "xhtml", "xml", "xsl".
&lt;/pre&gt;</pre>

    <p>You may also use the
    <a href="http://dev.w3.org/html5/spec-author-view/the-code-element.html#the-code-element"
     >HTML 5</a> convention of embedding a <tt>code</tt> element inside the
    <code>PRE</code> and using <code>language-java</code> style classes.
    E.g. <xmp class="prettyprint"><pre class="prettyprint"><code class="language-java">...</code></pre></xmp>

    <h3>It doesn't work on <tt>&lt;obfuscated code sample&gt;</tt>?</h3>
    <p>Yes.  Prettifying obfuscated code is like putting lipstick on a pig
    &mdash; i.e. outside the scope of this tool.</p>

    <h3>Which browsers does it work with?</h3>
    <p>It's been tested with IE 6, Firefox 1.5 &amp; 2, and Safari 2.0.4.
    Look at <a href="tests/prettify_test.html">the test page</a> to see if it
    works in your browser.</p>

    <h3>What's changed?</h3>
    <p>See the <a href="CHANGES.html">change log</a></p>

    <h3>Why doesn't Prettyprinting of strings work on WordPress?</h3>
    <p>Apparently wordpress does "smart quoting" which changes close quotes.
    This causes end quotes to not match up with open quotes.
    <p>This breaks prettifying as well as copying and pasting of code samples.
    See
    <a href="http://wordpress.org/support/topic/125038"
    >WordPress's help center</a> for info on how to stop smart quoting of code
    snippets.</p>

    <h3 id="linenums">How do I put line numbers in my code?</h3>
    <p>You can use the <code>linenums</code> class to turn on line
    numbering.  If your code doesn't start at line number 1, you can
    add a colon and a line number to the end of that class as in
    <code>linenums:52</code>.

    <p>For example
<pre class="prettyprint">&lt;pre class="prettyprint linenums:<b>4</b>"
&gt;// This is line 4.
foo();
bar();
baz();
boo();
far();
faz();
&lt;pre&gt;</pre>
    produces
<pre class="prettyprint linenums:4"
>// This is line 4.
foo();
bar();
baz();
boo();
far();
faz();
</pre>

    <h3>How do I prevent a portion of markup from being marked as code?</h3>
    <p>You can use the <code>nocode</code> class to identify a span of markup
    that is not code.
<pre class="prettyprint">&lt;pre class=prettyprint&gt;
int x = foo();  /* This is a comment  &lt;span class="nocode"&gt;This is not code&lt;/span&gt;
  Continuation of comment */
int y = bar();
&lt;/pre&gt;</pre>
produces
<pre class="prettyprint">
int x = foo();  /* This is a comment  <span class="nocode">This is not code</span>
  Continuation of comment */
int y = bar();
</pre>

    <p>For a more complete example see the issue22
    <a href="tests/prettify_test.html#issue22">testcase</a>.</p>

    <h3>I get an error message "a is not a function" or "opt_whenDone is not a function"</h3>
    <p>If you are calling <code>prettyPrint</code> via an event handler, wrap it in a function.
    Instead of doing
    <blockquote>
      <code class="prettyprint lang-js"
       >addEventListener('load', prettyPrint, false);</code>
    </blockquote>
    wrap it in a closure like
    <blockquote>
      <code class="prettyprint lang-js"
       >addEventListener('load', function (event) { prettyPrint() }, false);</code>
    </blockquote>
    so that the browser does not pass an event object to <code>prettyPrint</code> which
    will confuse it.

    <h3>How can I customize the colors and styles of my code?</h3>
    <p>
    Prettify adds <code>&lt;span&gt;</code> with <code>class</code>es describing
    the kind of code.  You can create CSS styles to matches these
    classes.
    See the
    <a href="http://google-code-prettify.googlecode.com/svn/trunk/styles/index.html">
    theme gallery</a> for examples.
    </p>

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