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object.forEach [JS 1.8]

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object.forEach
=========
*Requires JavaScript 1.8*

`void object.forEach(function callback(item, value)[, thisObject])`

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  1. Object.prototype.forEach = function(fun /*, thisp*/) {
  2.   // if this gets called on an array, use appropriate forEach
  3.   if ( Object.prototype.toString.call(this) == "[object Array]" ) return Array.prototype.forEach.apply(this, Array.prototype.slice.call(arguments));
  4.   if ( typeof fun != "function" ) throw new TypeError();
  5.   let it = Iterator(this), thisp = arguments[1];
  6.   try {
  7.     while (true) {
  8.       fun.apply(thisp, it.next());
  9.     }
  10.   } catch (err if err instanceof StopIteration) {}
  11. }

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