Array direct assignment vs push

JavaScript performance comparison

Revision 69 of this test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var array = [];
};
</script>

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Testing in unknown unknown
Test Ops/sec
Direct assignment
var i = 0;
for(; i < 100; i++)
{
  array[i] = i;
}
pending…
Push
var i = 0;
for(; i < 100; i++)
{
  array.push(i);
}
pending…
Direct assignment (calculated)
var i = 0;
for(; i < 100; i++)
{
  array[array.length-1] = i;
}
pending…

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