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Run results for:
className vs. classList - changing
Fork from https://measurethat.net/Benchmarks/Show/54/0/classname-vs-setattribute-vs-classlist
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<iframe src="https://measurethat.net/Embed?id=625321" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36
Browser:
Chrome 145
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
5 months ago
className =
22K/s
classList
4K/s
View exact numbers
Test name
Executions per second
✓
className =
21,763 Ops/sec
classList
3,684 Ops/sec
HTML Preparation code:
<div id="foo" class="A"></div>
Tests:
className =
var element = document.getElementById('foo'); var i = 1000; while (i--) { // vs using className element.className = 'B'; }
classList
var element = document.getElementById('foo'); var i = 1000; while (i--) { // Using classList element.classList.remove('A'); element.classList.add('B'); }