title: Jquery check whether element is hidden (continuously)
body: <p>How to check whether a element is made to hide at once. i.e how to notify the visibility of an element.</p>
  
  <p>In my case, the element is made to hide by <code>slideUp</code> function. At once i should be notified about the visibility of the that element.</p>
  
  <p>I got the idea of using <code>bind()</code> method. But it does not have a <code>onHide</code> like event. So how to get like this ? any suggestions will be helpful !</p>
  
  <p><strong>EDIT:</strong></p>
  
  <p>I know it is possible to use <code>is(':hidden')</code> but i want to check continuously like <code>addEventListener</code> </p>