Benchmark: replaceChild vs replaceChildren vs documentFragment 3

HTML Preparation code:

<div id="container"></div>

Script Preparation code:

var elements = [document.createElement('div'), document.createElement('div')];
var fragment = document.createDocumentFragment();
var container = document.getElementById('container');

elements.forEach(element => fragment.appendChild(element));
container.appendChild(fragment);

Tests:

replaceChild
var changeIndex = 1; elements[changeIndex] = document.createElement('div'); var newChildren = document.createDocumentFragment(); elements.forEach(element => newChildren.appendChild(element)); container.replaceChild(elements[changeIndex], container.children[changeIndex]);
replaceChildren
var changeIndex = 1; elements[changeIndex] = document.createElement('div'); var newChildren = document.createDocumentFragment(); elements.forEach(element => newChildren.appendChild(element)); container.replaceChildren(elements)
append documentFragment
var changeIndex = 1; elements[changeIndex] = document.createElement('div'); var newChildren = document.createDocumentFragment(); elements.forEach(element => newChildren.appendChild(element)); container.replaceChildren(newChildren)

Historical Performance Data aggregated from 5 community runs

Desktop Results:

Chrome 5 runs

append documentFragment

1.2M/s

replaceChildren

956K/s

replaceChild

0/s

View exact numbers

✓ append documentFragment: 1,179,524 ops/sec
• replaceChildren: 955,866 ops/sec
• replaceChild: 0 ops/sec

Results show median performance across all community submissions. Run this benchmark yourself to verify on your device.

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
replaceChild
replaceChildren
append documentFragment

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser/OS: Chrome 137 on Linux

View result in a separate tab

replaceChildren

507K/s

append documentFragment

507K/s

replaceChild

0/s

View exact numbers

Test name	Executions per second
✓ replaceChildren	507,155 Ops/sec
append documentFragment	506,895 Ops/sec
replaceChild	0 Ops/sec

replaceChild vs replaceChildren vs documentFragment 3 (version: 0)

Comparing performance of: `replaceChild vs replaceChildren vs append documentFragment`

Created: 3 years ago by: Guest

Go to the latest result

replaceChild

replaceChildren

append documentFragment

Historical Performance Data aggregated from 5 community runs

Desktop Results:

Chrome 5 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

replaceChild vs replaceChildren vs documentFragment 3 (version: 0)

Comparing performance of: replaceChild vs replaceChildren vs append documentFragment

Created: 3 years ago by: Guest

Go to the latest result

replaceChild

replaceChildren

append documentFragment

Historical Performance Data aggregated from 5 community runs

Desktop Results:

Chrome 5 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `replaceChild vs replaceChildren vs append documentFragment`