How to use $.unique() function
<p>Please, help me to understand, how to use <code>$.unique()</code> function.</p>

<p>From the docs: </p>

<blockquote>
  <p>Sorts an array of DOM elements, in place, with the duplicates removed.</p>
</blockquote>

<p>I'm trying this code:</p>

<pre><code>&lt;h1 class="foo"&gt;Headline&lt;/h1&gt;
&lt;h1 class="foo"&gt;Headline&lt;/h1&gt;
&lt;h1 class="foo"&gt;Headline&lt;/h1&gt;

alert( $.unique($('.foo')).length );
</code></pre>

<p>It returns 3, but I supposed 1. What am I missing? And it would be great to see some practice example of using this function. Thanks.</p>

<p>P.S.</p>

<p>I've also tried to sort a few numbers, but got a very curious result.
The following code returns different values in different browsers!</p>

<p><code>$.unique([ 1, 2, 2, 3, 3, 1 ])</code></p>

<ul>
<li>Safari - 1, 2, 3, 1</li>
<li>Opera - 2, 1, 3</li>
<li>FF - 3, 2, 1, 3</li>
<li>Chrome - 3, 2, 1</li>
<li>IE - 2, 1, 3</li>
</ul>
