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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=577680" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Mobile Safari/537.36
Browser:
Chrome Mobile 131
Operating system:
Android
Device Platform:
Mobile
Date tested:
one year ago
getElementById
15.5M/s
querySelector class
11.4M/s
getElementsByClassName
10.9M/s
querySelector
6.9M/s
querySelectorAll
4.0M/s
View exact numbers
Test name
Executions per second
✓
getElementById
15,493,204 Ops/sec
querySelector class
11,350,192 Ops/sec
getElementsByClassName
10,921,998 Ops/sec
querySelector
6,942,204 Ops/sec
querySelectorAll
3,968,553 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;