title: change div id using jquery
body: <p>How to change the <code>id</code> of the <code>div</code> using jquery?</p>
  
  <p>I have <code>div</code> with <code>id</code> (initially as 'first') and a dropdown (with values 'first', 'second').</p>
  
  <p>On changing the dropdown value, i need to change the id of the <code>div</code> according to dropdown value.</p>