jQuery Multiple Selector Reducing Size of Collection
<p>It was my understanding that performing a query like <code>jQuery(a, b)</code> would give you a jQuery collection containing the union of <code>jQuery(a)</code> and <code>jQuery(b)</code>. However, I encountered this situation:</p>

<pre><code>jQuery(somediv).length ==&gt; 1
jQuery('td').length ==&gt; over 600
jQuery('td', somediv).length ==&gt; 1 (the div)
</code></pre>

<p>What's going on?</p>
