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<div class="section" id="the-mathjax-hub-object">
<span id="api-hub"></span><h1>The MathJax.Hub Object<a class="headerlink" href="#the-mathjax-hub-object" title="Permalink to this headline">¶</a></h1>
<p>The MathJax Hub, <cite>MathJax.Hub</cite>, is the main control structure for
MathJax. It is where input and output <a class="reference internal" href="../reference/glossary.html#term-jax"><span class="xref std std-term">jax</span></a> are tied together,
and it is what handles processing of the MathJax <code class="docutils literal"><span class="pre"><script></span></code> tags.
Processing of the mathematics on the page may require external files
to be loaded (when the mathematics includes less common functionality,
for example, that is defined in an extension file), and since file
loading is asynchronous, a number of the methods below may return
before their actions are completed. For this reason, they include
callback functions that are called when the action completes. These
can be used to synchronize actions that require the mathematics to be
completed before those actions occur. See the <a class="reference internal" href="../advanced/callbacks.html#using-callbacks"><span class="std std-ref">Using Callbacks</span></a> documentation for more details.</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">config: { ... }</code></dt>
<dd><p>This holds the configuration parameters for MathJax. Set these
values using <code class="xref py py-meth docutils literal"><span class="pre">MathJax.Hub.Config()</span></code> described below. The
options and their default values are given in the <a class="reference internal" href="../options/hub.html#configure-hub"><span class="std std-ref">Core
Options</span></a> reference page.</p>
</dd></dl>
<dl class="describe">
<dt>
<code class="descname">processSectionDelay: 50</code></dt>
<dd><p>The pause (in milliseconds) between input and output phases of MathJax’s processing. Set this to <code class="docutils literal"><span class="pre">0</span></code> to avoid jitter when updating output frequently (e.g., in a live preview environment).</p>
</dd></dl>
<dl class="describe">
<dt>
<code class="descname">processUpdateTime: 250</code></dt>
<dd><p>The minimum time (in milliseconds) between updates of the
“Processing Math” message. After this amount of time has passed,
and after the next equation has finished being processed,
MathJax will stop processing momentarily so that the update
message can be displayed, and so that the browser can handle user
interaction.</p>
</dd></dl>
<dl class="describe">
<dt>
<code class="descname">processUpdateDelay: 10</code></dt>
<dd><p>The amount of time (in milliseconds) that MathJax pauses after
issuing its processing message before starting the processing again
(to give browsers time to handle user interaction).</p>
</dd></dl>
<dl class="describe">
<dt>
<code class="descname">signal</code></dt>
<dd><p>The hub processing signal (tied to the
<code class="xref py py-meth docutils literal"><span class="pre">MathJax.Hub.Register.MessageHook()</span></code> method).</p>
</dd></dl>
<dl class="describe">
<dt>
<code class="descname">queue</code></dt>
<dd><p>MathJax’s main processing queue. Use <code class="xref py py-meth docutils literal"><span class="pre">MathJax.Hub.Queue()</span></code> to push
callbacks onto this queue.</p>
</dd></dl>
<dl class="describe">
<dt>
<code class="descname">Browser</code></dt>
<dd><p>The name of the browser as determined by MathJax. It will be one
of <code class="docutils literal"><span class="pre">Firefox</span></code>, <code class="docutils literal"><span class="pre">Safari</span></code>, <code class="docutils literal"><span class="pre">Chrome</span></code>, <code class="docutils literal"><span class="pre">Opera</span></code>, <code class="docutils literal"><span class="pre">MSIE</span></code>,
<code class="docutils literal"><span class="pre">Konqueror</span></code>, or <code class="docutils literal"><span class="pre">unknown</span></code>. This is actually an object with
additional properties and methods concerning the browser:</p>
<dl class="describe">
<dt>
<code class="descname">version</code></dt>
<dd><p>The browser version number, e.g., <code class="docutils literal"><span class="pre">"4.0"</span></code></p>
</dd></dl>
<dl class="describe">
<dt>
<code class="descname">isMac and isPC</code></dt>
<dd><p>These are boolean values that indicate whether the browser is
running on a Macintosh computer or a Windows computer. They
will both be <code class="docutils literal"><span class="pre">false</span></code> for a Linux computer.</p>
</dd></dl>
<dl class="describe">
<dt>
<code class="descname">isMobile</code></dt>
<dd><p>This is <code class="docutils literal"><span class="pre">true</span></code> when MathJax is running a mobile version of a
WebKit or Gecko-based browser.</p>
</dd></dl>
<dl class="describe">
<dt>
<code class="descname">isFirefox, isSafari, isChrome, isOpera, isMSIE, isKonqueror</code></dt>
<dd><p>These are <code class="docutils literal"><span class="pre">true</span></code> when the browser is the indicated one, and
<code class="docutils literal"><span class="pre">false</span></code> otherwise.</p>
</dd></dl>
<dl class="describe">
<dt>
<code class="descname">versionAtLeast(version)</code></dt>
<dd><p>This tests whether the browser version is at least that given
in the <cite>version</cite> string. Note that you can not simply do a
numeric comparison, as version 4.10 should be considered later
than 4.9, for example. Similarly, 4.10 is different from 4.1,
for instance.</p>
</dd></dl>
<dl class="describe">
<dt>
<code class="descname">Select(choices)</code></dt>
<dd><p>This lets you perform browser-specific functions. Here,
<cite>choices</cite> is an object whose properties are the names of the
browsers and whose values are the functions to be performed.
Each function is passed one parameter, which is the
<code class="docutils literal"><span class="pre">MathJax.Hub.Browser</span></code> object. You do not need to include
every browser as one of your choices — only those for which you
need to do special processing. 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">Hub</span><span class="p">.</span><span class="nx">Browser</span><span class="p">.</span><span class="nx">Select</span><span class="p">({</span>
<span class="nx">MSIE</span><span class="o">:</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">browser</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">browser</span><span class="p">.</span><span class="nx">versionAtLeast</span><span class="p">(</span><span class="s2">"8.0"</span><span class="p">))</span> <span class="p">{...</span> <span class="k">do</span> <span class="nx">version</span> <span class="mi">8</span> <span class="nx">stuff</span> <span class="p">...</span> <span class="p">}</span>
<span class="p">...</span> <span class="k">do</span> <span class="nx">general</span> <span class="nx">MSIE</span> <span class="nx">stuff</span> <span class="p">...</span>
<span class="p">},</span>
<span class="nx">Firefox</span><span class="o">:</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">browser</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">browser</span><span class="p">.</span><span class="nx">isMac</span><span class="p">)</span> <span class="p">{...</span> <span class="k">do</span> <span class="nx">Mac</span> <span class="nx">stuff</span> <span class="p">...</span> <span class="p">}</span>
<span class="p">...</span> <span class="k">do</span> <span class="nx">general</span> <span class="nx">Firefox</span> <span class="nx">stuff</span>
<span class="p">}</span>
<span class="p">});</span>
</pre></div>
</div>
</dd></dl>
</dd></dl>
<dl class="describe">
<dt>
<code class="descname">inputJax</code></dt>
<dd><p>An object storing the MIME types associated with the various
registered input jax (these are the types of the <code class="docutils literal"><span class="pre"><script></span></code> tags
that store the math to be processed by each input jax).</p>
</dd></dl>
<dl class="describe">
<dt>
<code class="descname">outputJax</code></dt>
<dd><p>An object storing the output jax associate with the various
element jax MIME types for the registered output jax.</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="Config">
<code class="descname">Config</code><span class="sig-paren">(</span><em>options</em><span class="sig-paren">)</span><a class="headerlink" href="#Config" title="Permalink to this definition">¶</a></dt>
<dd><p>Sets the configuration options (stored in <code class="docutils literal"><span class="pre">MathJax.Hub.config</span></code>)
to the values stored in the <cite>options</cite> object. See
<a class="reference internal" href="../options/index.html#configuration"><span class="std std-ref">Configuring MathJax</span></a> for details on how this
is used and the options that you can set.</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>options</strong> — object containing options to be set</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">Configured()</code></dt>
<dd><p>When <code class="docutils literal"><span class="pre">delayStartupUntil</span></code> is specified in the configuration file or
in the script that loads <code class="docutils literal"><span class="pre">MathJax.js</span></code>, MathJax’s startup sequence is
delayed until this routine is called. See <a class="reference internal" href="../options/index.html#configuration"><span class="std std-ref">Configuring MathJax</span></a> for details on how this is used.</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">Returns:</th><td class="field-body"><code class="docutils literal"><span class="pre">null</span></code></td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="describe">
<dt>
<code class="descname">Register.PreProcessor(callback)</code></dt>
<dd><p>Used by preprocessors to register themselves with MathJax so that
they will be called during the <code class="xref py py-meth docutils literal"><span class="pre">MathJax.Hub.PreProcess()</span></code>
action.</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>callback</strong> — the callback specification for the preprocessor</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">Register.MessageHook(type,callback)</code></dt>
<dd><p>Registers a listener for a particular message being sent to the
hub processing signal (where <cite>PreProcessing</cite>, <cite>Processing</cite>, and
<cite>New Math</cite> messages are sent). When the message equals the
<cite>type</cite>, the <cite>callback</cite> will be called with the message as its
parameter.</p>
<p>The following is an example for using the MessageHook to list
internal errors within MathJax which would otherwise be silent:</p>
<div class="highlight-javascript"><div class="highlight"><pre><span></span><span class="nx">MathJax</span><span class="p">.</span><span class="nx">Hub</span><span class="p">.</span><span class="nx">Register</span><span class="p">.</span><span class="nx">MessageHook</span><span class="p">(</span><span class="s2">"TeX Jax - parse error"</span><span class="p">,</span><span class="kd">function</span> <span class="p">(</span><span class="nx">message</span><span class="p">)</span> <span class="p">{</span>
<span class="c1">// do something with the error. message[1] will contain the data about the error.</span>
<span class="p">});</span>
<span class="nx">MathJax</span><span class="p">.</span><span class="nx">Hub</span><span class="p">.</span><span class="nx">Register</span><span class="p">.</span><span class="nx">MessageHook</span><span class="p">(</span><span class="s2">"Math Processing Error"</span><span class="p">,</span><span class="kd">function</span> <span class="p">(</span><span class="nx">message</span><span class="p">)</span> <span class="p">{</span>
<span class="c1">// do something with the error. message[2] is the Error object that records the problem.</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> — a string indicating the message to look for</li>
<li><strong>callback</strong> — a callback specification</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">Register.StartupHook(type,callback)</code></dt>
<dd><p>Registers a listener for a particular message being sent to the
startup signal (where initialization and component startup
messages are sent). When the message equals the <cite>type</cite>, the
<cite>callback</cite> will be called with the message as its parameter.
See the <a class="reference internal" href="../advanced/signals.html#using-signals"><span class="std std-ref">Using Signals</span></a> documentation for
more details.</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>type</strong> — a string indicating the message to look for</li>
<li><strong>callback</strong> — a callback specification</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">Register.LoadHook(file,callback)</code></dt>
<dd><p>Registers a callback to be called when a particular file is
completely loaded and processed. (The callback is called when the
file makes its <code class="xref py py-meth docutils literal"><span class="pre">MathJax.Ajax.loadComplete()</span></code> call.) The
<cite>file</cite> should be the complete file name, e.g.,
<code class="docutils literal"><span class="pre">"[MathJax]/config/default.js"</span></code>.</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>file</strong> — the name of the file to wait for</li>
<li><strong>callback</strong> — a callback specification</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">the callback object</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt>
<code class="descname">Queue</code><span class="sig-paren">(</span><em>callback</em>, <em>...</em><span class="sig-paren">)</span></dt>
<dd><p>Pushes the given callbacks onto the main MathJax command queue.
This synchronizes the commands with MathJax so that they will be
performed in the proper order even when some run asynchronously.
See <a class="reference internal" href="../advanced/queues.html#using-queues"><span class="std std-ref">Using Queues</span></a> for more details about how
to use queues, and the MathJax queue in particular. You may
supply as many <cite>callback</cite> specifications in one call to the
<a class="reference internal" href="callback.html#Queue" title="Queue"><code class="xref py py-meth docutils literal"><span class="pre">Queue()</span></code></a> method as you wish.</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>callback</strong> — a callback specification</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">the callback object for the last callback added to the queue</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="Typeset">
<code class="descname">Typeset</code><span class="sig-paren">(</span><span class="optional">[</span><em>element</em><span class="optional">[</span>, <em>callback</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#Typeset" title="Permalink to this definition">¶</a></dt>
<dd><p>Calls the preprocessors on the given element (or elements if it is an
array of elements), and then typesets any math elements within the
element. If no <cite>element</cite> is provided, the whole document is processed.
The <cite>element</cite> is either the DOM <cite>id</cite> of the element, a reference to
the DOM element itself, or an array of id’s or references. The
<cite>callback</cite> is called when the process is complete. See the
<a class="reference internal" href="../advanced/typeset.html#typeset-math"><span class="std std-ref">Modifying Math</span></a> section for details of how to use
this method properly.</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>element</strong> — the element(s) whose math is to be typeset</li>
<li><strong>callback</strong> — the callback specification</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">the callback object</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="PreProcess">
<code class="descname">PreProcess</code><span class="sig-paren">(</span><span class="optional">[</span><em>element</em><span class="optional">[</span>, <em>callback</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#PreProcess" title="Permalink to this definition">¶</a></dt>
<dd><p>Calls the loaded preprocessors on the entire document, or on the given
DOM element (or elements, if it is an array of elements). The
<cite>element</cite> is either the DOM <cite>id</cite> of the element, a reference to the
DOM element itself, or an array of id’s or references. The <cite>callback</cite>
is called when the processing is complete.</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>element</strong> — the element to be preprocessed</li>
<li><strong>callback</strong> — the callback specification</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">the callback object</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="Process">
<code class="descname">Process</code><span class="sig-paren">(</span><span class="optional">[</span><em>element</em><span class="optional">[</span>, <em>callback</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#Process" title="Permalink to this definition">¶</a></dt>
<dd><p>Scans either the entire document or a given DOM <cite>element</cite> (or array of
elements) for MathJax <code class="docutils literal"><span class="pre"><script></span></code> tags and processes the math those
tags contain. The <cite>element</cite> is either the DOM <cite>id</cite> of the element to
scan, a reference to the DOM element itself, or an array of id’s or
references. The <cite>callback</cite> is called when the processing is complete.</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>element</strong> — the element(s) to be processed</li>
<li><strong>callback</strong> — the callback specification</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">the callback object</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="Update">
<code class="descname">Update</code><span class="sig-paren">(</span><span class="optional">[</span><em>element</em><span class="optional">[</span>, <em>callback</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#Update" title="Permalink to this definition">¶</a></dt>
<dd><p>Scans either the entire document or a given DOM element (or elements if
it is an array of elements) for mathematics that has changed since the
last time it was processed, or is new, and typesets the mathematics
they contain. The <cite>element</cite> is either the DOM <cite>id</cite> of the element to
scan, a reference to the DOM element itself, or an array of id’s or
references. The <cite>callback</cite> is called when the processing is complete.</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>element</strong> — the element(s) to be updated</li>
<li><strong>callback</strong> — the callback specification</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">the callback object</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="Reprocess">
<code class="descname">Reprocess</code><span class="sig-paren">(</span><span class="optional">[</span><em>element</em><span class="optional">[</span>, <em>callback</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#Reprocess" title="Permalink to this definition">¶</a></dt>
<dd><p>Removes any typeset mathematics from the document or DOM element
(or elements if it is an array of elements), and then processes
the mathematics again, re-typesetting everything. This may be
necessary, for example, if the CSS styles have changed and those
changes would affect the mathematics. Reprocess calls both the
input and output jax to completely rebuild the data for
mathematics. The <cite>element</cite> is either the DOM <cite>id</cite> of the element
to scan, a reference to the DOM element itself, or an array of
id’s or references. The <cite>callback</cite> is called when the processing
is complete.</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>element</strong> — the element(s) to be reprocessed</li>
<li><strong>callback</strong> — the callback specification</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">the callback object</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="Rerender">
<code class="descname">Rerender</code><span class="sig-paren">(</span><span class="optional">[</span><em>element</em><span class="optional">[</span>, <em>callback</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#Rerender" title="Permalink to this definition">¶</a></dt>
<dd><p>Removes any typeset mathematics from the document or DOM element
(or elements if it is an array of elements), and then renders the
mathematics again, re-typesetting everything from the current
internal version (without calling the input jax again). The
<cite>element</cite> is either the DOM <cite>id</cite> of the element to scan, a
reference to the DOM element itself, or an array of id’s or
references. The <cite>callback</cite> is called when the processing is
complete.</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>element</strong> — the element(s) to be reprocessed</li>
<li><strong>callback</strong> — the callback specification</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">the callback object</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="getAllJax">
<code class="descname">getAllJax</code><span class="sig-paren">(</span><span class="optional">[</span><em>element</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#getAllJax" title="Permalink to this definition">¶</a></dt>
<dd><p>Returns a list of all the element jax in the document or a
specific DOM element. The <cite>element</cite> is either the DOM <cite>id</cite> of the
element, or a reference to the DOM element itself.</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>element</strong> — the element to be searched</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">array of <cite>element jax</cite> objects</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="getJaxByType">
<code class="descname">getJaxByType</code><span class="sig-paren">(</span><em>type</em><span class="optional">[</span>, <em>element</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#getJaxByType" title="Permalink to this definition">¶</a></dt>
<dd><p>Returns a list of all the element jax of a given MIME-type in the
document or a specific DOM element. The <cite>element</cite> is either the
DOM <cite>id</cite> of the element to search, or a reference to the DOM
element itself.</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>type</strong> — MIME-type of <cite>element jax</cite> to find</li>
<li><strong>element</strong> — the element to be searched</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">array of <cite>element jax</cite> objects</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="getJaxByInputType">
<code class="descname">getJaxByInputType</code><span class="sig-paren">(</span><em>type</em><span class="optional">[</span>, <em>element</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#getJaxByInputType" title="Permalink to this definition">¶</a></dt>
<dd><p>Returns a list of all the element jax associated with input
<code class="docutils literal"><span class="pre"><script></span></code> tags with the given MIME-type within the given DOM
element or the whole document. The <cite>element</cite> is either the DOM
<cite>id</cite> of the element to search, or a reference to the DOM element
itself.</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>type</strong> — MIME-type of input (e.g., <code class="docutils literal"><span class="pre">"math/tex"</span></code>)</li>
<li><strong>element</strong> — the element to be searched</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">array of <cite>element jax</cite> objects</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="getJaxFor">
<code class="descname">getJaxFor</code><span class="sig-paren">(</span><em>element</em><span class="sig-paren">)</span><a class="headerlink" href="#getJaxFor" title="Permalink to this definition">¶</a></dt>
<dd><p>Returns the element jax associated with a given DOM
element. If the element does not have an associated element jax,
<code class="docutils literal"><span class="pre">null</span></code> is returned. The <cite>element</cite> is either the DOM <cite>id</cite> of the
element, or a reference to the DOM element itself.</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>element</strong> — the element whose element jax is required</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last"><cite>element jax</cite> object or <code class="docutils literal"><span class="pre">null</span></code></p>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="isJax">
<code class="descname">isJax</code><span class="sig-paren">(</span><em>element</em><span class="sig-paren">)</span><a class="headerlink" href="#isJax" title="Permalink to this definition">¶</a></dt>
<dd><p>Returns <code class="docutils literal"><span class="pre">0</span></code> if the element is not a <code class="docutils literal"><span class="pre"><script></span></code> that can be
processed by MathJax or the result of an output jax, returns <code class="docutils literal"><span class="pre">-1</span></code>
if the element is an unprocessed <code class="docutils literal"><span class="pre"><script></span></code> tag that could be
handled by MathJax, and returns <code class="docutils literal"><span class="pre">1</span></code> if the element is a processed
<code class="docutils literal"><span class="pre"><script></span></code> tag or an element that is the result of an output jax.</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>element</strong> — the element to inspect</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">integer (-1, 0, 1)</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="setRenderer">
<code class="descname">setRenderer</code><span class="sig-paren">(</span><em>renderer</em><span class="optional">[</span>, <em>type</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#setRenderer" title="Permalink to this definition">¶</a></dt>
<dd><p>Sets the output jax for the given element jax <code class="docutils literal"><span class="pre">type</span></code> (or <code class="docutils literal"><span class="pre">jax/mml</span></code>
if none is specified) to be the one given by <code class="docutils literal"><span class="pre">renderer</span></code>, which
must be the name of a renderer, such as <code class="docutils literal"><span class="pre">NativeMML</span></code> or
<code class="docutils literal"><span class="pre">HTML-CSS</span></code>. Note that this does not cause the math on the page
to be rerendered; it just sets the renderer for output in the
future (call :meth:<code class="docutils literal"><span class="pre">Rerender()</span></code> above to replace the current
renderings by new ones).</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>renderer</strong> — the name of the output jax to use for rendering</li>
<li><strong>type</strong> — the element jax MIME type whose renderer to set</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="Insert">
<code class="descname">Insert</code><span class="sig-paren">(</span><em>dst</em>, <em>src</em><span class="sig-paren">)</span><a class="headerlink" href="#Insert" title="Permalink to this definition">¶</a></dt>
<dd><p>Inserts data from the <cite>src</cite> object into the <cite>dst</cite> object. The
<cite>key:value</cite> pairs in <cite>src</cite> are (recursively) copied into <cite>dst</cite>, so
that if <cite>value</cite> is itself an object, its content is copied into
the corresponding object in <cite>dst</cite>. That is, objects within <cite>src</cite>
are merged into the corresponding objects in <cite>dst</cite> (they don’t
replace them).</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>dst</strong> — the destination object</li>
<li><strong>src</strong> — the source object</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">the modified destination object</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="formatError">
<code class="descname">formatError</code><span class="sig-paren">(</span><em>script</em>, <em>error</em><span class="sig-paren">)</span><a class="headerlink" href="#formatError" title="Permalink to this definition">¶</a></dt>
<dd><p>This is called when an internal error occurs during the processing
of a math element (i.e., an error in the MathJax code itself).
The <cite>script</cite> is a reference to the <code class="docutils literal"><span class="pre"><script></span></code> tag where the
error occurred, and <cite>error</cite> is the <code class="docutils literal"><span class="pre">Error</span></code> object for the error.
The default action is to insert an HTML snippet at the location of
the script, but this routine can be overriden during MathJax
configuration in order to perform some other action.
<code class="docutils literal"><span class="pre">MathJax.Hub.lastError</span></code> holds the <code class="docutils literal"><span class="pre">error</span></code> value of the last
error on the page.</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 <code class="docutils literal"><span class="pre"><script></span></code> tag causing the error</li>
<li><strong>error</strong> — the <code class="docutils literal"><span class="pre">Error</span></code> object for the error</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>
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