What is the purpose of the second argument in $(first, second)
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/6979097/what-does-the-second-argument-to-mean">What does the second argument to $() mean?</a>  </p>
</blockquote>



<p>There is some time that i use jQuery and from time to time I see this:</p>

<pre><code>$(argument1, argument2).doSomething();
</code></pre>

<p>Where is the documentation for filtering with a second argument?</p>

<p>EDIT:</p>

<p>I'm talking about this way of using it:</p>

<pre><code>var t=0; // the height of the highest element (after the function runs)
var t_elem;  // the highest element (after the function runs)
$("*",elem).each(function () {
    $this = $(this);
    if ( $this.outerHeight() &gt; t ) {
        t_elem=this;
        t=$this.outerHeight();
    }
});
</code></pre>

<p>Notice:</p>

<pre><code>$("*",elem)
</code></pre>

<p>I'm not talking about </p>

<pre><code>$("a,b,span")
</code></pre>

<p>way of filtering. I now that well.</p>
