Run results for: window.getComputedStyle WebKitCSSMatrix vs getAttribute

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Browser: Chrome 122

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
getComputedStyle	151.6 Ops/sec
getAttribute	3105.1 Ops/sec

HTML Preparation code:

<div id="foo" data-attr="foo" style="transform: translate3d(0, -350px, 0)"></div>

Tests:

getComputedStyle
var i = 3000; while (i--) { chekele('foo'); } function chekele(element) { var tr = window.getComputedStyle(document.getElementById(element), null).getPropertyValue("transform"); return matrix = new WebKitCSSMatrix(tr); }
getAttribute
var i = 3000; while (i--) { chekele('foo'); } function chekele(element) { return document.getElementById(element).getAttribute('data-attr'); }