Preparation code

 
<script>
  Benchmark.prototype.setup = function() {
    window.headl=[];
    for (var i = 0; i < 15; i++)
    headl[i] = i;
    window.obj = {};
    for (var i = 0; i < 15; i++)
    obj[i] = Math.random();
    window.arr = [];
    for (var i = 0; i < 15; i++)
    arr[i] = Math.random();
  };
</script>

Test runner

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obj = {}
for (var i = 0; i < 500; i++)
obj[~~ (Math.random() * 1000)] = Math.random();

arr = [];
for (var i = 0; i < 500; i++)
arr[~~ (Math.random() * 1000)] = Math.random();

var result;
result = obj[headl[345]];

var result;
result = arr[345];

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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 Bergi on 26th September 2012
• Revision 2: published on 16th January 2013
• Revision 3: published on 16th January 2013
• Revision 4: published on 16th January 2013
• Revision 5: published on 16th January 2013
• Revision 6: published on 16th January 2013
• Revision 7: published on 16th January 2013

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