title: Getting recent selection in multiple select box
body: <p>I want to populate content depending upon the multiple select box selection.
  I can get all selected value of select box.
  Using </p>
  
  <pre><code>$('select').change(function(){
     console.info($(this).val()) // it gives me array
  });
  </code></pre>
  
  <p>But i want only the recent selection/deselection user makes. </p>