Why do people declare something as null in JavaScript?
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/461966/why-is-there-a-null-value-in-javascript">Why is there a <code>null</code> value in JavaScript?</a>  </p>
</blockquote>



<p>I don't understand what null is for. 'Undefined' as well.</p>
