! preceding function in javascript?
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/3755606/what-does-the-exclamation-mark-do-before-the-function">What does the exclamation mark do before the function?</a>  </p>
</blockquote>



<p>I saw a function formatted like this today for the first time:</p>

<pre><code>!function(){}();
</code></pre>

<p>What is the preceding exclamation mark for? I assume it functions the same as:</p>

<pre><code>(function(){})();
</code></pre>

<p>But... what's going on here?</p>
