copy array slice-vs-concat

JavaScript performance comparison

Revision 6 of this test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
   
      var a = [];
      var b;
      var e = [];
   
      for (var i = 0; i < 10000; i++) {
        a.push('550e8400-e29b-41d4-a716-446655440000');
      }
};
</script>

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Testing in unknown unknown
Test Ops/sec
concat
b = a.concat();
pending…
json
b = JSON.parse(JSON.stringify(a));
pending…
slice
b = a.slice(0);
pending…
concat new
b = e.concat(a);
pending…
slice new
b = a.slice();
pending…

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