access vs cached

JavaScript performance comparison

Revision 2 of this test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var hasOwn = {}.hasOwnProperty,
      slice = Array.prototype.slice,
      obj = {a: 1},
      array = [0, 1, 2];
};
</script>

Test runner

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Testing in unknown unknown
Test Ops/sec
direct call
obj.hasOwnProperty('a');
obj.hasOwnProperty('b');
array.slice();
array.slice(1);
pending…
cached call
hasOwn.call(obj, 'a');
hasOwn.call(obj, 'b');
slice.call(array);
slice.call(array, 1);
pending…

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