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Run results for:
className vs. setAttribute vs. classList
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=616805" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Android 16; Mobile; rv:142.0) Gecko/142.0 Firefox/142.0
Browser:
Firefox Mobile 142
Operating system:
Android
Device Platform:
Mobile
Date tested:
11 months ago
className
3K/s
classList
2K/s
setAttribute
2K/s
View exact numbers
Test name
Executions per second
✓
className
3,072 Ops/sec
classList
1,540 Ops/sec
setAttribute
1,519 Ops/sec
HTML Preparation code:
<div id="foo"></div>
Tests:
className
var element = document.getElementById("foo"); var i = 1000; while (i--) { element.className = "bar"; }
setAttribute
var element = document.getElementById("foo"); var i = 1000; while (i--) { element.setAttribute("class", "bar"); }
classList
var element = document.getElementById("foo"); var i = 1000; while (i--) { element.classList.add("bar"); }