.has() in jquery
<p>I'm trying to get my head around jquery .has(). I tried to use it to find a li item that has a class="a" and set its border.</p>

<pre><code>&lt;script type=text/javascript&gt;
$("document").ready( function(){
    $("li").has(".a").css("border", "3px solid red");
});
</code></pre>

<p></p>

<pre><code>&lt;ul id="list1"&gt;
    &lt;li class="a"&gt;item 1&lt;/li&gt;
    &lt;li class="a"&gt;item 2&lt;/li&gt;
    &lt;li class="b"&gt;item 3&lt;/li&gt;
    &lt;li class="b"&gt;item 4&lt;/li&gt;
&lt;/ul&gt;
</code></pre>
