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Run results for:
DataAttribute vs Class Selector vs ID Selector vs Custom Attributes
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Run details:
User agent:
Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0
Browser:
Firefox 115
Operating system:
Windows 8.1
Device Platform:
Desktop
Date tested:
one year ago
Benchmark engine:
Benchmark.js
class
3.3M/s
id
3.2M/s
data attribute
2.1M/s
uid
1.9M/s
View exact numbers
Test name
Executions per second
✓
class
3,289,763 Ops/sec
id
3,186,560 Ops/sec
data attribute
2,063,365 Ops/sec
uid
1,934,562 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"]');