Run results for: window.getComputedStyle vs. className

Run details:

User agent: Mozilla/5.0 (Linux; Android 8.1.0; Redmi 5 Plus) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.105 Mobile Safari/537.36

Browser: Chrome Mobile 89

Operating system: Android 8.1.0

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
getComputedStyle	34.8 Ops/sec
className	164.4 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; }