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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=622403" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36
Browser:
Chrome 137
Operating system:
Linux
Device Platform:
Desktop
Date tested:
7 months ago
setAttribute
7.7M/s
className
5.5M/s
classList
4.3M/s
View exact numbers
Test name
Executions per second
✓
setAttribute
7,675,506 Ops/sec
className
5,475,000 Ops/sec
classList
4,272,978 Ops/sec
HTML Preparation code:
<div id="foo"></div>
Script Preparation code:
var element = document.getElementById("foo");
Tests:
className
element.className = "bar";
setAttribute
element.setAttribute("class", "bar");
classList
element.classList.add("bar");