arrayfor vs foreach

JavaScript performance comparison

Revision 2 of this test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var i = 0,
      l = 10000,
      elems = [];
    for (i = 0; i < l; i++) {
      elems.push((i + 1));
    }
};
</script>

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Testing in unknown unknown
Test Ops/sec
for
var x, l = elems.length;
for (x = 0; x < l; x++) {
  var a = 2 + elems[x];
}
pending…
foreach
elems.forEach(function(elem) {
  var a = 2 + elem;
});
pending…

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