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
For getting things like the width/height if an element (assuming no borders, padding, or margins), is it faster to compute all the element's styles, or use the getBoundingClientRect function.
<div id="innerdiv" style="position:absolute;width:200px;height:200px;left:20px;top:50px;background-color:grey;">Some text</div>
var outerdiv = document.createElement('div');
outerdiv.style.position = 'relative';
outerdiv.style.width = '311px';
outerdiv.style.height = '240px';
var innerdiv = document.getElementById('innerdiv');
outerdiv.appendChild(innerdiv);
Ready to run.
Test | Ops/sec | |
---|---|---|
Defined getComputedStyle |
| ready |
Auto getComputedStyle |
| ready |
Defined getBoundingClientRect |
| ready |
Auto getBoundingClientRect |
| ready |
Style Property |
| ready |
Style Property W,H,T,L |
| ready |
client / offset |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.