Merging two jQuery selections
<pre><code>var _sel1 = $('.red');
var _sel2 = $('.yellow');
</code></pre>

<p>How can I merge them into one, without using different selectors?</p>

<pre><code>// I don't want to do it this way 
var _sel3=$('.red,.yellow') or $('.red').add('.yellow');
</code></pre>
