Getting some lag when applying e.preventDefault();

Getting some lag when applying e.preventDefault();

  2. $(".change_page").click(function(e){
  3.     e.preventDefault();
  4.     do_stuff();
  5. });
I noticed when I click one of these links, there is an ever so slight lag on all browsers. Maybe less than half a second, but it's noticeable.

Now, when I remove e.preventDefault() and use return false instead, everything runs a lot smoother.

Any ideas?

Thanks!