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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

Test case details

Title *

Description
(Markdown syntax is allowed)

Preparation Code

Preparation HTML
(this will be inserted in the <body> of a valid HTML5 document in standards mode)
(useful when testing DOM operations or including libraries)

<script src="http://cdn.sencha.com/ext/beta/4.2.0.265/ext.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/dojo/1/dojo/dojo.xd.js"></script>

Setup JS

Teardown JS

Test cases

Test #1

Title *

Async

Code *var d1 = dojo.query(".section");

Test #2

Title *

Async

Code *var d2 = dojo.query(".section .age2");

Test #3

Title *

Async

Code *var j1 = jQuery('.section');

Test #4

Title *

Async

Code *var j2 = jQuery('.section .age2');

Test #5

Title *

Async

Code *var e1 = Ext.query('.section');

Test #6

Title *

Async

Code *var e2 = Ext.query('.section .age2');