What does jQuery ajax() return?
<p>Is this in the API documentation:</p>

<pre><code>jQuery.ajax( url [, settings] )
</code></pre>

<p>when you run</p>

<pre><code>done();
</code></pre>

<p>on it</p>

<p>What is done acting upon?</p>

<p>I'm looking for documentation on done().</p>

<p>It is working on this object ( slang )</p>

<pre><code>xhr
</code></pre>

<p>on this property which takes a method:</p>

<pre><code>onreadystatechange
</code></pre>
