jsPerf.app is an online JavaScript performance benchmark test runner & jsperf.com mirror. It is a complete rewrite in homage to the once excellent jsperf.com now with hopefully a more modern & maintainable codebase.

jsperf.com URLs are mirrored at the same path, e.g:

https://jsperf.com/negative-modulo/2

Can be accessed at:

https://jsperf.app/negative-modulo/2

is jquery

Benchmark created by Dan Heberden on April 5, 2011

Description

well, is it?

Preparation HTML

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script>
  var a = new Array();
</script>

Test runner

Ready to run.

Testing in
Test		Ops/sec
instanceof	`a instanceof jQuery;`	ready
hacky	`a.length !== undefined && typeof length === "number"; a.jquery; a.constructor.expando;`	ready
hasOwnProperty	`!a.hasOwnProperty('jquery');`	ready

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.

Revision 1: published by Dan Heberden on April 5, 2011