unshift vs concat2

JavaScript performance comparison

Test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    function a() {
    var args = [1].concat(Array.prototype.slice.call(arguments,0));
    return args;
    }
   
    function b(){
    var args = Array.prototype.slice.call(arguments,0);
    args.unshift(1);
    return args;
    }
   
   
};
</script>

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Testing in unknown unknown
Test Ops/sec
concat
a(1,2,3);
pending…
unshift
b(1,2,3);
pending…

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