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Run results for:
DataAttribute vs Class Selector vs ID Selector
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Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.2.1 Safari/605.1.15
Browser:
Safari 17
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
2 years ago
Class
4.2M/s
data attribute
3.9M/s
ID
3.8M/s
View exact numbers
Test name
Executions per second
✓
Class
4,189,846 Ops/sec
data attribute
3,944,070 Ops/sec
ID
3,750,226 Ops/sec
HTML Preparation code:
<div class="hello" id="hello" data-hello>Hello</div>
Tests:
Class
document.querySelector('.hello');
ID
document.querySelector('#hello');
data attribute
document.querySelector('[data-hello]');