Info

Wanted to see if this blog post: http://www.andyfrank.com/blog/2009/06/javascript-bitshift-performance/ still was true.

Back in 2009, bitshifting was faster in Firefox, Chrome and Opera, but had same speed in IE and Safari. How is it now?

Preparation code

 
<script>
  Benchmark.prototype.setup = function() {
    var x = 0xffff;
  };
</script>

Test runner

Warning! For accurate results, please disable Firebug before running the tests. (Why?)

Java applet disabled.

x = x >> 2;

x = x / 4;

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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 karl on 9th January 2012
• Revision 2: published on 10th January 2012

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