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<!DOCTYPE html>
<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]-->
<head>
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  <title>The MathJax.HTML Object &mdash; MathJax 2.7 documentation</title>
  

  
  
  
  

  

  
  
    

  

  
  
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              <p class="caption"><span class="caption-text">Basic Usage</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="../mathjax.html">What is MathJax?</a></li>
<li class="toctree-l1"><a class="reference internal" href="../start.html">Getting Started with MathJax</a></li>
<li class="toctree-l1"><a class="reference internal" href="../installation.html">Installing and Testing MathJax</a></li>
<li class="toctree-l1"><a class="reference internal" href="../configuration.html">Loading and Configuring MathJax</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../tex.html">MathJax TeX and LaTeX Support</a></li>
<li class="toctree-l1"><a class="reference internal" href="../mathml.html">MathJax MathML Support</a></li>
<li class="toctree-l1"><a class="reference internal" href="../asciimath.html">MathJax AsciiMath Support</a></li>
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<p class="caption"><span class="caption-text">Advanced topics</span></p>
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<li class="toctree-l1"><a class="reference internal" href="../advanced/model.html">The MathJax Processing Model</a></li>
<li class="toctree-l1"><a class="reference internal" href="../advanced/startup.html">The MathJax Startup Sequence</a></li>
<li class="toctree-l1"><a class="reference internal" href="../advanced/synchronize.html">Synchronizing Your Code with MathJax</a></li>
<li class="toctree-l1"><a class="reference internal" href="../advanced/dynamic.html">Loading MathJax Dynamically</a></li>
<li class="toctree-l1"><a class="reference internal" href="../advanced/typeset.html">Modifying Math on the Page</a></li>
<li class="toctree-l1"><a class="reference internal" href="../advanced/toMathML.html">Obtaining the MathML for an Expression</a></li>
<li class="toctree-l1"><a class="reference internal" href="../advanced/extension-writing.html">Writing MathJax Extensions</a></li>
<li class="toctree-l1"><a class="reference internal" href="../advanced/debugging-tips.html">Debugging Tips</a></li>
<li class="toctree-l1"><a class="reference internal" href="../advanced/mathjax-node.html">MathJax on NodeJS</a></li>
</ul>
<p class="caption"><span class="caption-text">The MathJax API</span></p>
<ul class="current">
<li class="toctree-l1 current"><a class="reference internal" href="index.html">Details of the MathJax API</a><ul class="current">
<li class="toctree-l2"><a class="reference internal" href="variable.html">The MathJax variable</a></li>
<li class="toctree-l2"><a class="reference internal" href="hub.html">The MathJax.Hub object</a></li>
<li class="toctree-l2"><a class="reference internal" href="ajax.html">The MathJax.Ajax object</a></li>
<li class="toctree-l2"><a class="reference internal" href="message.html">The MathJax.Message object</a></li>
<li class="toctree-l2 current"><a class="current reference internal" href="#">The MathJax.HTML object</a><ul>
<li class="toctree-l3"><a class="reference internal" href="#properties">Properties</a></li>
<li class="toctree-l3"><a class="reference internal" href="#methods">Methods</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="callback.html">The MathJax.CallBack class</a></li>
<li class="toctree-l2"><a class="reference internal" href="queue.html">The MathJax.CallBack.Queue class</a></li>
<li class="toctree-l2"><a class="reference internal" href="signal.html">The MathJax.CallBack.Signal class</a></li>
<li class="toctree-l2"><a class="reference internal" href="localization.html">The MathJax.Localization object</a></li>
<li class="toctree-l2"><a class="reference internal" href="inputjax.html">The MathJax.InputJax class</a></li>
<li class="toctree-l2"><a class="reference internal" href="outputjax.html">The MathJax.OutputJax class</a></li>
<li class="toctree-l2"><a class="reference internal" href="elementjax.html">The MathJax.ElementJax class</a></li>
<li class="toctree-l2"><a class="reference internal" href="jax.html">The base Jax class</a></li>
<li class="toctree-l2"><a class="reference internal" href="object.html">The MathJax Object-Oriented Programming Model</a></li>
</ul>
</li>
</ul>
<p class="caption"><span class="caption-text">Miscellanea</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="../misc/accessibility-features.html">Accessibility features</a></li>
<li class="toctree-l1"><a class="reference internal" href="../misc/browser-compatibility.html">Browser Compatibility</a></li>
<li class="toctree-l1"><a class="reference internal" href="../misc/epub.html">EPUB3 Reading Systems</a></li>
<li class="toctree-l1"><a class="reference internal" href="../misc/badges.html">MathJax Badges and Logo</a></li>
<li class="toctree-l1"><a class="reference internal" href="../misc/articles.html">Articles and Presentations</a></li>
<li class="toctree-l1"><a class="reference internal" href="../misc/platforms.html">Using MathJax in Web Platforms</a></li>
<li class="toctree-l1"><a class="reference internal" href="../misc/faq.html">MathJax FAQ</a></li>
<li class="toctree-l1"><a class="reference internal" href="../misc/mathjax-in-use.html">MathJax in Use</a></li>
</ul>
<p class="caption"><span class="caption-text">Upgrading MathJax</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="../upgrading/index.html">Upgrading MathJax</a></li>
</ul>
<p class="caption"><span class="caption-text">Reference Pages</span></p>
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<li class="toctree-l1"><a class="reference internal" href="../reference/HTML-snippets.html">HTML snippets</a></li>
<li class="toctree-l1"><a class="reference internal" href="../reference/CSS-styles.html">CSS style objects</a></li>
<li class="toctree-l1"><a class="reference internal" href="../reference/localization-strings.html">Localization strings</a></li>
<li class="toctree-l1"><a class="reference internal" href="../reference/glossary.html">Glossary</a></li>
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  <div class="section" id="the-mathjax-html-object">
<span id="api-html"></span><h1>The MathJax.HTML Object<a class="headerlink" href="#the-mathjax-html-object" title="Permalink to this headline"></a></h1>
<p>The <code class="docutils literal"><span class="pre">MathJax.HTML</span></code> object provides routines for creating HTML
elements and adding them to the page, and in particular, it contains
the code that processes MathJax’s <a class="reference internal" href="../reference/HTML-snippets.html#html-snippets"><span class="std std-ref">HTML snippets</span></a>
and turns them into actual DOM objects.  It also implements the
methods used to manage the cookies used by MathJax.</p>
<div class="section" id="properties">
<h2>Properties<a class="headerlink" href="#properties" title="Permalink to this headline"></a></h2>
<dl class="describe">
<dt>
<code class="descname">Cookie.prefix: &quot;mjx&quot;</code></dt>
<dd><p>The prefix used for names of cookies stored by MathJax.</p>
</dd></dl>

<dl class="describe">
<dt>
<code class="descname">Cookie.expires: 365</code></dt>
<dd><p>The expiration time (in days) for cookies created by MathJax.</p>
</dd></dl>

</div>
<div class="section" id="methods">
<h2>Methods<a class="headerlink" href="#methods" title="Permalink to this headline"></a></h2>
<dl class="method">
<dt id="Element">
<code class="descname">Element</code><span class="sig-paren">(</span><em>type</em><span class="optional">[</span>, <em>attributes</em><span class="optional">[</span>, <em>contents</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#Element" title="Permalink to this definition"></a></dt>
<dd><p>Creates a DOM element of the given type.  If <cite>attributes</cite> is
non-<code class="docutils literal"><span class="pre">null</span></code>, it is an object that contains <cite>key:value</cite> pairs of
attributes to set for the newly created element.  If <cite>contents</cite> is
non-<code class="docutils literal"><span class="pre">null</span></code>, it is an <a class="reference internal" href="../reference/HTML-snippets.html#html-snippets"><span class="std std-ref">HTML snippet</span></a> that
describes the contents to create for the element.  For example</p>
<div class="highlight-javascript"><div class="highlight"><pre><span></span><span class="kd">var</span> <span class="nx">div</span> <span class="o">=</span> <span class="nx">MathJax</span><span class="p">.</span><span class="nx">HTML</span><span class="p">.</span><span class="nx">Element</span><span class="p">(</span>
  <span class="s2">&quot;div&quot;</span><span class="p">,</span>
  <span class="p">{</span><span class="nx">id</span><span class="o">:</span> <span class="s2">&quot;MathDiv&quot;</span><span class="p">,</span> <span class="nx">style</span><span class="o">:</span><span class="p">{</span><span class="nx">border</span><span class="o">:</span><span class="s2">&quot;1px solid&quot;</span><span class="p">,</span> <span class="nx">padding</span><span class="o">:</span><span class="s2">&quot;5px&quot;</span><span class="p">}},</span>
  <span class="p">[</span><span class="s2">&quot;Here is math: \\(x+1\\)&quot;</span><span class="p">,[</span><span class="s2">&quot;br&quot;</span><span class="p">],</span><span class="s2">&quot;and a display $$x+1\\over x-1$$&quot;</span><span class="p">]</span>
<span class="p">);</span>
</pre></div>
</div>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>type</strong> — node type to be created</li>
<li><strong>attributes</strong> — object specifying attributes to set</li>
<li><strong>contents</strong> — HTML snippet representing contents of node</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">the DOM element created</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>

<dl class="method">
<dt id="addElement">
<code class="descname">addElement</code><span class="sig-paren">(</span><em>parent</em>, <em>type</em><span class="optional">[</span>, <em>attributes</em><span class="optional">[</span>, <em>content</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#addElement" title="Permalink to this definition"></a></dt>
<dd><p>Creates a DOM element and appends it to the <cite>parent</cite> node
provided.  It is equivalent to</p>
<div class="highlight-javascript"><div class="highlight"><pre><span></span><span class="nx">parent</span><span class="p">.</span><span class="nx">appendChild</span><span class="p">(</span><span class="nx">MathJax</span><span class="p">.</span><span class="nx">HTML</span><span class="p">.</span><span class="nx">Element</span><span class="p">(</span><span class="nx">type</span><span class="p">,</span><span class="nx">attributes</span><span class="p">,</span><span class="nx">content</span><span class="p">))</span>
</pre></div>
</div>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>parent</strong> — the node where the element will be added</li>
<li><strong>attributes</strong> — object specifying attributes to set</li>
<li><strong>contents</strong> — HTML snippet representing contents of node</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">the DOM element created</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>

<dl class="method">
<dt id="TextNode">
<code class="descname">TextNode</code><span class="sig-paren">(</span><em>text</em><span class="sig-paren">)</span><a class="headerlink" href="#TextNode" title="Permalink to this definition"></a></dt>
<dd><p>Creates a DOM text node with the given text as its content.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>text</strong> — the text for the node</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">the new text node</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>

<dl class="method">
<dt id="addText">
<code class="descname">addText</code><span class="sig-paren">(</span><em>parent</em>, <em>text</em><span class="sig-paren">)</span><a class="headerlink" href="#addText" title="Permalink to this definition"></a></dt>
<dd><p>Creates a DOM text node with the given text and appends it to the
<cite>parent</cite> node.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>parent</strong> — the node where the text will be added</li>
<li><strong>text</strong> — the text for the new node</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">the new text node</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>

<dl class="method">
<dt id="setScript">
<code class="descname">setScript</code><span class="sig-paren">(</span><em>script</em>, <em>text</em><span class="sig-paren">)</span><a class="headerlink" href="#setScript" title="Permalink to this definition"></a></dt>
<dd><p>Sets the contents of the <code class="docutils literal"><span class="pre">script</span></code> element to be the given
<code class="docutils literal"><span class="pre">text</span></code>, properly taking into account the browser limitations and
bugs.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>script</strong> — the script whose content is to be set</li>
<li><strong>text</strong> — the text that is to be the script’s new content</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last"><code class="docutils literal"><span class="pre">null</span></code></p>
</td>
</tr>
</tbody>
</table>
</dd></dl>

<dl class="method">
<dt id="getScript">
<code class="descname">getScript</code><span class="sig-paren">(</span><em>script</em><span class="sig-paren">)</span><a class="headerlink" href="#getScript" title="Permalink to this definition"></a></dt>
<dd><p>Gets the contents of the <code class="docutils literal"><span class="pre">script</span></code> element, properly taking into
account the browser limitations and bugs.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>script</strong> — the script whose content is to be retrieved</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">the text of the <code class="docutils literal"><span class="pre">script</span></code></p>
</td>
</tr>
</tbody>
</table>
</dd></dl>

<dl class="describe">
<dt>
<code class="descname">Cookie.Set(name,data)</code></dt>
<dd><p>Creates a MathJax cookie using the <code class="docutils literal"><span class="pre">MathJax.HTML.Cookie.prefix</span></code>
and the <cite>name</cite> as the cookie name, and the <cite>key:value</cite> pairs in
the <cite>data</cite> object as the data for the cookie.  For example,</p>
<div class="highlight-javascript"><div class="highlight"><pre><span></span><span class="nx">MathJax</span><span class="p">.</span><span class="nx">HTML</span><span class="p">.</span><span class="nx">Cookie</span><span class="p">.</span><span class="nx">Set</span><span class="p">(</span><span class="s2">&quot;test&quot;</span><span class="p">,{</span><span class="nx">x</span><span class="o">:</span><span class="mi">42</span><span class="p">,</span> <span class="nx">y</span><span class="o">:</span><span class="s2">&quot;It Works!&quot;</span><span class="p">});</span>
</pre></div>
</div>
<p>will create a cookie named “mjx.test” that stores the values of
<code class="docutils literal"><span class="pre">x</span></code> and <code class="docutils literal"><span class="pre">y</span></code> provided in the <cite>data</cite> object.  This data can be
retrieved using the <code class="xref py py-meth docutils literal"><span class="pre">MathJax.HTML.Cookie.Get()</span></code> method
discussed below.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>name</strong> — the name that identifies the cookie</li>
<li><strong>data</strong> — object containing the data to store in the cookie</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last"><code class="docutils literal"><span class="pre">null</span></code></p>
</td>
</tr>
</tbody>
</table>
</dd></dl>

<dl class="describe">
<dt>
<code class="descname">Cookie.Get(name[,obj])</code></dt>
<dd><p>Looks up the data for the cookie named <cite>name</cite> and merges the data
into the given <cite>obj</cite> object, or returns a new object containing
the data.  For instance, given the cookie stored by the example
above,</p>
<div class="highlight-javascript"><div class="highlight"><pre><span></span><span class="kd">var</span> <span class="nx">data</span> <span class="o">=</span> <span class="nx">MathJax</span><span class="p">.</span><span class="nx">HTML</span><span class="p">.</span><span class="nx">Cookie</span><span class="p">.</span><span class="nx">Get</span><span class="p">(</span><span class="s2">&quot;test&quot;</span><span class="p">);</span>
</pre></div>
</div>
<p>would set <code class="docutils literal"><span class="pre">data</span></code> to <code class="docutils literal"><span class="pre">{x:42,</span> <span class="pre">y:&quot;It</span> <span class="pre">Works!&quot;}</span></code>, while</p>
<div class="highlight-javascript"><div class="highlight"><pre><span></span><span class="kd">var</span> <span class="nx">data</span> <span class="o">=</span> <span class="p">{</span><span class="nx">x</span><span class="o">:</span><span class="mi">10</span><span class="p">,</span> <span class="nx">z</span><span class="o">:</span><span class="s2">&quot;Safe&quot;</span><span class="p">};</span>
<span class="nx">MathJax</span><span class="p">.</span><span class="nx">HTML</span><span class="p">.</span><span class="nx">Cookie</span><span class="p">.</span><span class="nx">Get</span><span class="p">(</span><span class="s2">&quot;test&quot;</span><span class="p">,</span><span class="nx">data</span><span class="p">);</span>
</pre></div>
</div>
<p>would leave <code class="docutils literal"><span class="pre">data</span></code> as <code class="docutils literal"><span class="pre">{x:42,</span> <span class="pre">y:&quot;It</span> <span class="pre">Works!&quot;,</span> <span class="pre">z:&quot;Safe&quot;}</span></code>.</p>
</dd></dl>

</div>
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