array iteration

JavaScript performance comparison

Revision 535 of this test case created by

Preparation code

<script>
  var i, values = [],
      sum = 0;
  for (i = 0; i < 10000; i++) {
    values[i] = i;
  }

  function add(val) {
    sum += val;
  }
</script>

<script>

    function myForEach(arr, callback) {
        let len = arr.length;
        let idx = 0;
        while (i < len) {
            callback(arr[i]);
            idx += 1;
        }
    }
    Array.prototype.myProtoEach = function (callback) {
        let len = this.length;
        let idx = 0;
        while (i < len) {
            callback(this[i]);
            idx += 1;
        }      
    }
</script>
    

Preparation code output

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Testing in CCBot 2.0.0 / Other 0.0.0
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