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<span id="configure-jsmath2jax"></span><h1>The jsMath2jax Preprocessor<a class="headerlink" href="#the-jsmath2jax-preprocessor" title="Permalink to this headline"></a></h1>
<p>The options below control the operation of the <cite>jsMath2jax</cite>
preprocessor that is run when you include <tt class="docutils literal"><span class="pre">&quot;jsMath2jax.js&quot;</span></tt> in the
<cite>extensions</cite> array of your configuration. They are listed with their
default values. To set any of these options, include a <tt class="docutils literal"><span class="pre">jsMath2jax</span></tt>
section in your <tt class="xref py py-meth docutils literal"><span class="pre">MathJax.Hub.Config()</span></tt> call. For example</p>
<div class="highlight-javascript"><div class="highlight"><pre><span class="nx">MathJax</span><span class="p">.</span><span class="nx">Hub</span><span class="p">.</span><span class="nx">Config</span><span class="p">({</span>
<span class="nx">jsMath2jax</span><span class="o">:</span> <span class="p">{</span>
<span class="nx">preview</span><span class="o">:</span> <span class="s2">&quot;none&quot;</span>
<span class="p">}</span>
<span class="p">});</span>
</pre></div>
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<p>would set the <tt class="docutils literal"><span class="pre">preview</span></tt> parameter to <tt class="docutils literal"><span class="pre">&quot;none&quot;</span></tt>.</p>
<dl class="describe">
<dt>
<tt class="descname">element: null</tt></dt>
<dd><p>The id name of the element that should be processed by <cite>jsMath2jax</cite>.
The default is the whole document.</p>
</dd></dl>
<dl class="describe">
<dt>
<tt class="descname">preview: &quot;TeX&quot;</tt></dt>
<dd><p>This controls whether <cite>jsMath2jax</cite> inserts <tt class="docutils literal"><span class="pre">MathJax_Preview</span></tt> spans
to make a preview available, and what preview to use, when it
locates in-line or display mathematics in the page. The default
is <tt class="docutils literal"><span class="pre">&quot;TeX&quot;</span></tt>, which means use the TeX code as the preview (which
will be visible until it is processed by MathJax). Set to
<tt class="docutils literal"><span class="pre">&quot;none&quot;</span></tt> to prevent previews from being inserted (the math
will simply disappear until it is typeset). Set to an array
containing the description of an HTML snippet in order to use the
same preview for all equations on the page.</p>
<p>Examples:</p>
<div class="highlight-javascript"><div class="highlight"><pre><span class="nx">preview</span><span class="o">:</span> <span class="p">[</span><span class="s2">&quot;[math]&quot;</span><span class="p">],</span> <span class="c1">// insert the text &quot;[math]&quot; as the preview</span>
</pre></div>
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<div class="highlight-javascript"><div class="highlight"><pre><span class="nx">preview</span><span class="o">:</span> <span class="p">[[</span><span class="s2">&quot;img&quot;</span><span class="p">,{</span><span class="nx">src</span><span class="o">:</span> <span class="s2">&quot;/images/mypic.jpg&quot;</span><span class="p">}]],</span> <span class="c1">// insert an image as the preview</span>
</pre></div>
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<p>See the <a class="reference internal" href="../HTML-snippets.html#html-snippets"><em>description of HTML snippets</em></a> for
details on how to represent HTML code in this way.</p>
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