$(element).on(event) vs $(ancestor).on(event, element)
<p>I've been using the latter of the below functions pretty much ever since <code>.on()</code> was added, but I've noticed recently that quite a lot of answers use the former.</p>

<p>What is the difference between:</p>

<pre><code>$(ancestor).on(event, element, function() { ... })
</code></pre>

<p>And:</p>

<pre><code>$(element).on(event, function() { ... })
</code></pre>

<p><a href="http://jsfiddle.net/DFgxw/" rel="nofollow">JSFiddle example</a>.</p>
