jquery selector of the form $('xxxx', domnode); is it documented?
<p>An example from dataTable shows:</p>

<pre><code> var cell = $('td:eq(2)', nRow);
</code></pre>

<p><code>nRow</code> is a DOM node passed in by dataTable. Sure enough, this grabs the second td in nRow. The question is, why? Where is this syntax documented?</p>
