concat vs push.apply

JavaScript performance comparison

Revision 7 of this test case created

Preparation code

<script>
  A = [];

for (var i = 0; i < 42; ++i)
  A[i] = {};
</script>

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Testing in unknown unknown
Test Ops/sec
concat
var a = [1,2,3,4,5,6,7,8,9,10];
a = a.concat(A)
pending…
push.apply
var a = [1,2,3,4,5,6,7,8,9,10];
a.push.apply(a, A)
pending…

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