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Run results for:
getElementById vs querySelector ID vs getElementsByClassName vs querySelectorAll
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=518476" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36
Browser:
Chrome 122
Operating system:
Linux
Device Platform:
Desktop
Date tested:
2 years ago
getElementById
4.8M/s
querySelector class
4.0M/s
getElementsByClassName
4.0M/s
querySelector
3.1M/s
querySelectorAll
1.7M/s
View exact numbers
Test name
Executions per second
✓
getElementById
4,758,652 Ops/sec
querySelector class
4,038,642 Ops/sec
getElementsByClassName
4,028,648 Ops/sec
querySelector
3,111,680 Ops/sec
querySelectorAll
1,686,008 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;