how to make complex selectors with 'this' jquery
<p>I have an event handler that needs to do something to one of its children, based on some saved data. So what I'm currently doing is something like this:</p>

<pre><code>// Get the ID of 'this'
item_id = $(this).attr('id');

// building a selector like $('#item1 .child_3')
$('#' + item_id + ' .child_' + spVal).addClass('blah');
</code></pre>

<p>But this seems a little cumbersome. I've tried:</p>

<pre><code>$(this + ' .child_' + spVal).addClass('blah');
</code></pre>

<p>and it doesn't work, which doesn't really surprise me. Is there a better way to do this then the successful way I've outlined above?</p>
