a['hello2'] !== undefined

JavaScript performance comparison

Revision 2 of this test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var a = {hello2:'world'}
};
</script>

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Test Ops/sec
a['hello2'] !== undefined
a['hello2'] !== undefined;
pending…
'hello2' in a;
'hello2' in a;
pending…
a.hello2 !== undefined
a.hello2 !== undefined;
pending…

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