addEventListener in Internet Explorer

Question

What is the equivalent to the Element Object in Internet Explorer 9?

if (!Element.prototype.addEventListener) {
    Element.prototype.addEventListener = func         


        

Answer 1

John Resig, author of jQuery, submitted his version of cross-browser implementation of addEvent and removeEvent to circumvent compatibility issues with IE's improper or non-existent addEventListener.

function addEvent( obj, type, fn ) {
  if ( obj.attachEvent ) {
    obj['e'+type+fn] = fn;
    obj[type+fn] = function(){obj['e'+type+fn]( window.event );}
    obj.attachEvent( 'on'+type, obj[type+fn] );
  } else
    obj.addEventListener( type, fn, false );
}
function removeEvent( obj, type, fn ) {
  if ( obj.detachEvent ) {
    obj.detachEvent( 'on'+type, obj[type+fn] );
    obj[type+fn] = null;
  } else
    obj.removeEventListener( type, fn, false );
}

Source: http://ejohn.org/projects/flexible-javascript-events/