Reverse While Loop

JavaScript performance comparison

Revision 125 of this test case created by Robin

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  var arr = [];
  var i = 1000;
  do {
    arr[i] = Math.random();
  } while (i--);

};
</script>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
cached
for (var i = 0, len = arr.length; i < len; i++) {
  arr[i] *= 2;
}
pending…
not cached
for (var i = 0; i < arr.length; i++) {
  arr[i] *= 2;
}
pending…
u wot m8
var len = 2;
len *= arr.length;
len -= len / 2;
for (var i = 0; i < len; i++) {
  arr[i] *= 2;
}
pending…

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