copy array slice-vs-concat

JavaScript performance comparison

Test case created and last updated

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var a = [];
    for (var i = 0; i < 100; i++) a.push('550e8400-e29b-41d4-a716-446655440000');
};
</script>

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Testing in unknown unknown
Test Ops/sec
slice
var b = [];
for (var j = 0; j < 100; j++) b.push(a.slice());
pending…
concat
var b = [];
for (var j = 0; j < 100; j++) b.push(a.concat());
pending…

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