Run results for: window.getComputedStyle vs. className

Run details:

User agent: Mozilla/5.0 (X11; Fedora; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36

Browser: Chrome 86

Operating system: Fedora

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
getComputedStyle	253.9 Ops/sec
className	1111.1 Ops/sec

HTML Preparation code:

<div id="foo"></div>

Tests:

getComputedStyle
var i = 3000; while (i--) { chekele('foo'); } function chekele(element) { return window.getComputedStyle(document.getElementById(element), null).getPropertyValue("display").indexOf('none') === -1; }
className
var i = 3000; while (i--) { chekele('foo'); } function chekele(element) { return document.getElementById(element).className.indexOf('hide') === -1; }