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JavaScript performance comparison

Test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var obj = {},
      array = new Array(10),
      z;
   
    for (var i = 0, length = array.length; i < length; ++i) array[i] = i;
   
    obj[5] = [];
    obj[6] = [];
    obj[10] = [];
};
</script>

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Testing in unknown unknown
Test Ops/sec
a
for (var i = 0, length = array.length; i < length; ++i) z = array[i];
pending…
o
z = obj[1];
pending…

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