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JavaScript performance comparison

Test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    x = [Math.random(), Math.random(), Math.random(), Math.random()];
};
</script>

Test runner

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Testing in unknown unknown
Test Ops/sec
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for (var i = 0; i < x.length; i++) {
  x[i]
}
pending…
9ojoij
x[0]
x[1]
x[2]
x[3]
pending…
htyjhrh6r
for (var i = 0, l = x.length; i < l; i++) {
  x[i]
}
pending…

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