Prefix or Postfix increment?

JavaScript performance comparison

Revision 6 of this test case created by imaya

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  var data = new Array(500 * 1000);
  var index = data.length - 1;
  while (index--) data[index] = index;

};
</script>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Prefix
for (var index = 0, len = data.length; index < len; ++index) {
  data[index] = data[index] * 2;
}
pending…
Suffix
for (var index = 0, len = data.length; index < len; index++) {
  data[index] = data[index] * 2;
}
pending…

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