Run results for: getComputedStyle WebKitCSSMatrix vs getAttribute

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.114 Safari/537.36

Browser: Chrome 89

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
getComputedStyle	60.6 Ops/sec
getAttribute	1030.8 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"); var matrix = new WebKitCSSMatrix(tr); return matrix; }
getAttribute
var i = 3000; while (i--) { chekele('foo'); } function chekele(element) { return document.getElementById(element).getAttribute('data-attr'); }