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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="https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<p id="foo">
  Test
</p>
<p id="bar">
  bars</p>

Setup JS

Teardown JS

Test cases

Test #1

Title *

Async

Code *

document.getElementById('foo');
document.getElementById('bar');

Test #2

Title *

Async

Code *

function _(id) {
  return document.getElementById(id);
}
_("foo");
_("bar");

Test #3

Title *

Async

Code *

function _(id) {
  return $(document.getElementById(id));
}
_('foo');
_('bar');

Test #4

Title *

Async

Code *

function _(id) {
  return $(document.getElementById(id));
}
$(_('foo'));
$(_('bar'));

Test #5

Title *

Async

Code *

$('#foo');
$('#bar');