javascript - Named Function Expressions in IE, part 2

Question

I asked this question a while back and was happy with the accepted answer. I just now realized, however, that the following technique:

var testaroo = 0;
(function executeOnLoad() {
    if (testaroo++ < 5) {
        setTimeout(executeOnLoad, 25);
        return;
    }
    alert(testaroo); // alerts "6"
})();

returns the result I expect. If T.J.Crowder's answer from my first question is correct, then shouldn't this technique not work?

Answer 1

Well, it will work, the problem with JScript (IE), is that the identifier of the function expression (executeOnLoad) will leak to its enclosing scope, and actually creating two function objects..

(function () {
  var myFunc = function foo () {};
  alert(typeof foo); // "undefined" on all browsers, "function" on IE

  if (typeof foo !== "undefined") { // avoid TypeError on other browsers
    alert( foo === myFunc ); // false!, IE actually creates two function objects
  }
})();