Preparation code

 
<script>
  Benchmark.prototype.setup = function() {
    var obj = { a: true, b: true, c: true, d: true, e: true, f: true };
  };
</script>

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if ("b" in obj) {

}

if(obj["b"] !== undefined) {

}

if(obj["b"]) {

}

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Revisions

You can edit these tests or add even more tests to this page by appending /edit to the URL. Here’s a list of current revisions for this page:

• Revision 1: published by Adam Drago on 18th February 2013
• Revision 2: published on 5th March 2013

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