Run results for: className vs classList with =

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36

Browser: Chrome 104

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
classList	1842.3 Ops/sec
className	5810.5 Ops/sec

HTML Preparation code:

<div id='foo'></div>

Tests:

classList
var element = document.getElementById("foo"); var i = 1000; while (i--) { element.classList = "bar"; }
className
var element = document.getElementById("foo"); var i = 1000; while (i--) { element.className = "bar"; }