Preparation code

 
<script>
  Benchmark.prototype.setup = function() {
    var obj = {
      a: '1',
      b: '2',
      c: '3',
      d: '4',
      e: '5',
      f: '6',
      g: '7',
      h: '8',
      j: '9',
      k: '10',
      l: '11',
      m: '12'
    },
    r1, r2;
  };
</script>

Test runner

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r1 = 'j' in obj;
r2 = 'FAKE' in obj;

r1 = obj.hasOwnProperty('j');
r2 = obj.hasOwnProperty('FAKE');

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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 on 5th January 2012
• Revision 2: published on 6th January 2012
• Revision 3: published on 6th January 2012
• Revision 4: published by Bryce Newbury on 4th February 2012

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