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Run results for:
childNodes vs children vs firstChild/nextSibling vs firstElementChild/nextElementSibling
Fastest way to list children
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=539017" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:123.0) Gecko/20100101 Firefox/123.0
Browser:
Firefox 123
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
firstElementChild nextElementChild
26.6M/s
firstChild nextSibling
11.3M/s
children
3.6M/s
ChildNodes2
3.1M/s
childNodes
2.9M/s
View exact numbers
Test name
Executions per second
✓
firstElementChild nextElementChild
26,550,770 Ops/sec
firstChild nextSibling
11,332,964 Ops/sec
children
3,593,179 Ops/sec
ChildNodes2
3,066,515 Ops/sec
childNodes
2,858,620 Ops/sec
HTML Preparation code:
<html> <body> <div id='test'> <div name='a'></div> <div name='b'></div> <div name='c'></div> </div> </body> </html>
Script Preparation code:
var parent = document.getElementById('test');
Tests:
childNodes
parent.childNodes.forEach(function (node) { let n = node; });
children
for (let i = 0; i < parent.children.length; i++) { let n = parent.children[i]; }
firstChild nextSibling
let elem = parent.firstChild; do { let n = elem; } while (elem = elem.nextSibling)
firstElementChild nextElementChild
let elem = parent.firstElementChild; do { let n = elem; } while (elem = elem.nextElementSibling)
ChildNodes2
let children = parent.childNodes; for (let i = 0; i < children.length; i++) { let n = children[i]; }