Editing jQuery.each vs. for loop vs Ext.Array.each vs lodash vs while

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Preparation code HTML (this will be inserted in the <body> of a valid HTML5 document in standards mode) (useful when testing DOM operations or including libraries)

</script>
<script>
  $.fn.forEach = Array.prototype.forEach;
  var extArrayEach = Ext.Array.each;
  Array.prototype.each = function(func){
      var array = this, 
          i = 0, 
          l = array.length;
      while(i < l) func(array[i], i, array), i++;
      return array
    };
 var breaker = {};
  _.forEach = function(obj, iterator, context) {
    if (obj == null) return;
    if (obj.length === +obj.length) {
      for (var i = 0, l = obj.length; i < l; i++) {
        if (iterator.call(context, obj[i], i, obj) === breaker) return;
      }
    } else {
      for (var key in obj) {
        if (_.has(obj, key)) {
          if (iterator.call(context, obj[key], key, obj) === breaker) return;
        }
      }
    }
  };
  //a static array.
  var a = [];
  for (var i = 0, len = 100; i < len; i++) {
    a[i] = i + "";
  }
</script>

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Editing `jQuery.each` vs. `for` loop vs Ext.Array.each vs lodash vs while

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