unshift vs concat2

JavaScript performance comparison

Test case created by

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>

Test runner

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
concat
a(1,2,3);
pending…
unshift
b(1,2,3);
pending…

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