event.preventDefault() on first click then remove

Question

I have the default anchor disabled if it has a class subnav as shown in this fiddle.

I only want this disabled for the first click then I want the normal anchor function

Answer 1

this will work for you

$("#elementid").bind("click", function( event ) {
  alert("This will be displayed only once.");
  event.preventDefault(); 
  $(this).unbind( event );
});