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

selectorComparision

Benchmark created on April 13, 2017

Preparation HTML

<div class="test" data-selector="test"></div>

Test runner

Ready to run.

Testing in
Test		Ops/sec
selectByClass	`document.querySelectorAll('.test')`	ready
selectByDataAttr	`document.querySelectorAll('[data-selector]')`	ready
selectByDataAttrWithClass	`document.querySelectorAll('.test[data-selector]')`	ready
selectByDataAttrWithClassReversed	`document.querySelectorAll('[data-selector].test')`	ready
selectByDataAttrWithValue	`document.querySelectorAll('[data-selector="test"]')`	ready

Revisions

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

Revision 1: published on April 13, 2017