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JavaScript performance comparison

Test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var obj = {
      5: 3,
      1: 632,
      9: 33
    },
      z;
};
</script>

Test runner

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Testing in unknown unknown
Test Ops/sec
array style iteration
for (var i = 0; i < 10; ++i) z = obj[i];
pending…
for in
for (var i in obj) z = obj[i];
pending…

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