Toggle navigation
MeasureThat
.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
Run results for:
className vs. setAttribute vs. classList
Go to the benchmark
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=531372" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36 Edg/126.0.0.0
Browser:
Chrome 126
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
className
853/s
setAttribute
748/s
classList
637/s
View exact numbers
Test name
Executions per second
✓
className
853 Ops/sec
setAttribute
748 Ops/sec
classList
637 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"); }