title: distance jQuery UI draggable object has been moved, dragged
body: <p>I am using the following code to allow for all members of the <code>.dataCard</code> class to be draggable left or right, but revert back to their original positions.</p>
  
  <p><code>$('.dataCard').draggable({ axis: 'x', revert: true });</code></p>
  
  <p>How can I tell the distance the item is away from its original position?</p>