map vs for-loop performance

JavaScript performance comparison

Revision 3 of this test case created by

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  var arr = new Array();
  for (var i = 0; i < 10000; i++) {
    arr[i] = i;
  }
  
  function multReturn(x) {
    return x * x;
  }

};
</script>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
map
var newArr = arr.map(multReturn);
pending…
for
var newArr = [];
for (var i = 0; i < arr.length; i++) {
  if (arr[i] != undefined) {
    newArr[i] = multReturn(arr[i]);
  }
}
pending…

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