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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=502005" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36
Browser:
Chrome 120
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
2 years ago
getElementById
11.4M/s
querySelector class
8.4M/s
getElementsByClassName
7.7M/s
querySelector
5.8M/s
querySelectorAll
3.4M/s
View exact numbers
Test name
Executions per second
✓
getElementById
11,412,404 Ops/sec
querySelector class
8,394,856 Ops/sec
getElementsByClassName
7,688,124 Ops/sec
querySelector
5,757,584 Ops/sec
querySelectorAll
3,428,544 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;