Toggle navigation
MeasureThat
.net
Create a benchmark
Tools
Feedback
Feature Requests
FAQ
Register
Log In
Run results for:
getElementById vs querySelector vs getElementsByClassName vs getElementsByName
Test performance of different ways of get just one particular DOM element
Go to the benchmark
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=623801" 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/143.0.0.0 Safari/537.36
Browser:
Chrome 143
Operating system:
Windows
Device Platform:
Desktop
Date tested:
8 months ago
Benchmark engine:
Benchmark.js
getElementById
19.4M/s
getElementsByName
8.0M/s
querySelector
7.4M/s
getElementsByTagName
7.1M/s
getElementsByClassName
6.5M/s
View exact numbers
Test name
Executions per second
✓
getElementById
19,423,126 Ops/sec
getElementsByName
7,976,590 Ops/sec
querySelector
7,429,478 Ops/sec
getElementsByTagName
7,138,052 Ops/sec
getElementsByClassName
6,525,977 Ops/sec
HTML Preparation code:
<div id="testdiv"> <div id="unique" class="unique" name="unique" data-unique="1">test</div> </div>
Script Preparation code:
var i, imax; var doc = document;
Tests:
getElementById
var test = doc.getElementById('testdiv').childNodes[0].innerHTML;
getElementsByTagName
var formelem = doc.getElementById('testdiv').getElementsByTagName('div')[0].innerHTML;
querySelector
var test = doc.getElementById('testdiv').querySelector('.unique').innerHTML;
getElementsByClassName
var test = doc.getElementById('testdiv').getElementsByClassName('unique')[0].innerHTML;
getElementsByName
var test = doc.getElementsByName('unique')[0].innerHTML;