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Run results for:
DataAttribute vs Class Selector vs ID Selector vs Custom Attributes
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<iframe src="https://measurethat.net/Embed?id=622234" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.6 Safari/605.1.15
Browser:
Safari 18
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
6 months ago
Test name
Executions per second
data attribute
6749745.0 Ops/sec
class
10409143.0 Ops/sec
id
9478637.0 Ops/sec
uid
9533746.0 Ops/sec
HTML Preparation code:
<div class="hello" id="hello" data-hello uid="hello">Hello</div>
Tests:
data attribute
document.querySelector('[data-hello]');
class
document.querySelector('.hello');
id
document.querySelector('#hello');
uid
document.querySelector('[uid="hello"]');