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Run results for:
getElementById vs querySelector ID vs getElementsByClassName vs querySelectorAll
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Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=565625" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Android 10; Mobile; rv:128.0) Gecko/128.0 Firefox/128.0
Browser:
Firefox Mobile 128
Operating system:
Android
Device Platform:
Mobile
Date tested:
one year ago
getElementById
5.6M/s
getElementsByClassName
4.4M/s
querySelector
4.3M/s
querySelector class
4.0M/s
querySelectorAll
1.8M/s
View exact numbers
Test name
Executions per second
✓
getElementById
5,620,332 Ops/sec
getElementsByClassName
4,441,820 Ops/sec
querySelector
4,296,780 Ops/sec
querySelector class
3,984,908 Ops/sec
querySelectorAll
1,764,846 Ops/sec
HTML Preparation code:
<div id="test_element_id" class="test_element_class"></div>
Tests:
getElementById
var el = document.getElementById('test_element_id'); var className = el.className;
querySelector
var el = document.querySelector('#test_element_id'); var className = el.className;
getElementsByClassName
var el = document.getElementsByClassName('test_element_class')[0]; var className = el.className;
querySelectorAll
var el = document.querySelectorAll('.test_element_class')[0]; var className = el.className;
querySelector class
var el = document.querySelector('.test_element_class'); var className = el.className;