in or property

JavaScript performance comparison

Revision 3 of this test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var youpi = Object.create(null, {
        a : {
            get : function() {
                return 'value';
            }
        }
    });
   
};
</script>

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Testing in unknown unknown
Test Ops/sec
in
if ('a' in youpi) {}
pending…
direct
if (youpi.a) {}
pending…
indexer
if (youpi['a']) {}
pending…

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