How to get first span element of a div and change class
<p>I have a div with a span</p>

<pre><code>&lt;div id="div1"&gt;
    &lt;span class=""&gt;hello&lt;/span&gt;
&lt;/div&gt;
</code></pre>

<p>When i click on div i want to change the class of only first span element of the div</p>

<pre><code>$('#div1').click(function() {
    // ... check if first span element inside the div .. if there and change the class..    
});  
</code></pre>
