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Run results for:
querySelectorAll data attribute vs class name vs combined
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=565255" 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/18.1 Safari/605.1.15
Browser:
Safari 18
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
class name
6.8M/s
data attribute
2.1M/s
class name with data attribute
1.2M/s
View exact numbers
Test name
Executions per second
✓
class name
6,814,912 Ops/sec
data attribute
2,121,333 Ops/sec
class name with data attribute
1,232,730 Ops/sec
HTML Preparation code:
<div class="test" data-attribute="test"></div> <div class="test" data-attribute="test"></div> <div class="test" data-attribute="test"></div> <div class="test" data-attribute="test"></div> <div class="test" data-attribute="test"></div> <div class="test" data-attribute="test"></div> <div class="test" data-attribute="test"></div> <div class="test" data-attribute="test"></div> <div class="test" data-attribute="test"></div> <div class="test" data-attribute="test"></div> <div class="test" data-attribute="test"></div> <div class="test" data-attribute="test"></div> <div class="test" data-attribute="test"></div> <div class="test" data-attribute="test"></div> <div class="test" data-attribute="test"></div> <div class="test" data-attribute="test"></div> <div class="test" data-attribute="test"></div> <div class="test" data-attribute="test"></div> <div class="test" data-attribute="test"></div> <div class="test" data-attribute="test"></div> <div class="test" data-attribute="test"></div> <div class="test" data-attribute="test"></div> <div class="test" data-attribute="test"></div> <div class="test" data-attribute="test"></div>
Tests:
data attribute
var test = document.querySelectorAll('[data-attribute="test"]');
class name
var test = document.querySelectorAll('.test');
class name with data attribute
var test = document.querySelectorAll('.test[data-attribute="test"]');