Run results for: className vs. classList

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.93 Safari/537.36 Edg/96.0.1054.53

Browser: Chrome 96

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

HTML Preparation code:

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

Tests:

className =
var element = document.getElementById('foo'); var i = 1000; while (i--) { element.className = 'bar'; element.className = ''; }
className +=
var element = document.getElementById('foo'); var i = 1000; while (i--) { element.className += ' bar'; element.className = ''; }
classList
var element = document.getElementById('foo'); var i = 1000; while (i--) { element.classList.add('bar'); element.classList.remove('bar'); }