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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/18.4 Safari/605.1.15
Browser:
Safari 18
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
Class
14.3M/s
ID
12.5M/s
data attribute
11.7M/s
View exact numbers
Test name
Executions per second
✓
Class
14,297,160 Ops/sec
ID
12,518,460 Ops/sec
data attribute
11,733,530 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]');