jquery nth-child issue
<p>My code is like this:</p>

<pre><code>var childNo = 2;
$('#someSelector tr:nth-child(childNo) td:first span').addClass('font-strike');
</code></pre>

<p>but it doesn't add the class. If i replace childNo with 2 it works fine. any idea how i can get it to work?</p>
