custom array forEach (v20)

Revision 20 of this benchmark created by Alexander Karagulamos on

Setup

var array = ["foo", "bar", "baz", "lorem", "ipsum", "lol", "cat"];
  
  var func = function() {
    2 + 2
  };
  
  Array.prototype.forEach2 = function(a) {
    var l = this.length;
    for (var i = 0; i < l; i++) a(this[i], i)
  }
  
  Array.prototype.map2 = function(a) {
    var l = this.length;
    var array = new Array(l),
      i = 0;
    for (; i < l; i++) {
      array[i] = a(this[i], i)
    }
    return array;
  }

Test runner

Ready to run.

Testing in
TestOps/sec
for
for (var i = array.length; i--;) {
  func();
}
ready
foreach
array.forEach(func)
ready
custom foreach
array.forEach2(func)
ready
map
array.map(func)
ready
custom map
array.map2(func)
ready

Revisions

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