)  </span></code></pre></div>
<pre><code>## [1] &quot;var x = 3;&quot;
## attr(,&quot;class&quot;)
## [1] &quot;JS_EVAL&quot;</code></pre>
<p>This can be useful where the library requires the use of callback functions for instance.</p>
<div class="rmdnote">
<p>
Replacing the serialiser will break this feature.
</p>
</div>
</div>
<div id="prepend-append-content" class="section level2" number="8.5">
<h2><span class="header-section-number">8.5</span> Prepend &amp; Append Content</h2>
<p>There is the ability to