How to know the element is a child of a parent
<pre><code>&lt;ul id="ulel"&gt;
  &lt;li id="liel"&gt;
     &lt;a id="ael"&gt;&lt;/a&gt;
  &lt;/li&gt;
  ...
&lt;/ul&gt;
</code></pre>

<p>How I can know that if <code>#ael</code> anchor exists inside <code>#ulel</code> in jquery?</p>
