Preparation code

 
<script>
  Benchmark.prototype.setup = function() {
    var foo = 'bar';
  };
</script>

Test runner

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if (foo == undefined) return 'foo is undefined';

if (foo === undefined) return 'foo is undefined';

if (typeof foo === 'undefined') return 'foo is undefined';

if (typeof foo == 'undefined') return 'foo is undefined'

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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 15th January 2013
• Revision 2: published on 15th January 2013

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