Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
Run results for:
document.querySelector vs document.body.querySelector vs getElementsByClassName
Go to the benchmark
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=587595" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36
Browser:
Chrome 133
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
querySelector
10678444.0 Ops/sec
querySelector.body
10805101.0 Ops/sec
getElementsByClassName
12894857.0 Ops/sec
getElementsByClassName BODY
10749283.0 Ops/sec
HTML Preparation code:
<div class="testElement"></div>
Tests:
querySelector
var el = document.querySelector('.testElement');
querySelector.body
var el = document.body.querySelector('.testElement');
getElementsByClassName
var el = document.getElementsByClassName('testElement');
getElementsByClassName BODY
var el = document.body.getElementsByClassName('testElement');