Array.prototype.slice.call() vs [].slice.call() nested

JavaScript performance comparison

Revision 13 of this test case created by Adam Hyland

Preparation code

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script>
  var items = [1, 2, 3, 4, 5],
      slice = Array.prototype.slice,
      _slice = [].slice, 
  wslice = window.Array.prototype.slice;
</script>
    

Preparation code output

Test runner

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Array.prototype.slice
Array.prototype.slice.call( items )
pending…
[].slice
[].slice.call( items )
pending…
cached prototype
slice.call(items);
pending…
cached [].slice
_slice.call(items);
pending…
Array().slice
Array().slice.call(items);
pending…
window.Array
window.Array.prototype.slice.call(items);
pending…
wslice cached
wslice.call( items );
pending…
just selection
[items[0],items[1],items[2],items[3],items[4]]
pending…

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Revisions

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