Question

I asked a question yesterday, I accepted the answer, but sometime later, I came to know that the solution was not complete. The question is :-

Insert a JQuery click handler that executes before the ones already registered

using setTimeout(handler,0); returns immediately and I can not use return setTimeout(handler,0);. How can I run this handler synchronously and not allow the parent function to complete until this handler is completely executed and I get the return value out of it ?

I am in hurry, so I am asking it again, rather than editing that question again.

Answer 1

You don’t need to use setTimeout. If u don’t use setTimeout, your handler reamins synchronous, and you can return all the value u want in your function.

<script>
   function f2() {
      alert('Handler declared in HTML')
   }

   buttons = document.getElementsByTagName('input');  // refine this, later

   for (i = 0, max = buttons.length; i < max; i++) {
      oldonclick = buttons[i].onclick;

      buttons[i].onclick = function() {
         alert('Prepend handler');
         oldonclick();
      }
   }
</script>