Run results for: getComputedStyle vs. className vs. className / contains

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36

Browser: Chrome 125

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

className

71K/s

classList.contains

13K/s

getComputedStyle

1K/s

View exact numbers

HTML Preparation code:

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

Tests:

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