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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=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
Test name
Executions per second
getElementById
15493204.0 Ops/sec
querySelector
6942204.5 Ops/sec
getElementsByClassName
10921998.0 Ops/sec
querySelectorAll
3968552.8 Ops/sec
querySelector class
11350192.0 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;