Run results for: replaceChildren VS while+appendChild VS replaceChildren+fragment VS innerHTML+fragment VS while+fragment

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:126.0) Gecko/20100101 Firefox/126.0

Browser: Firefox 126

Operating system: Windows

Device Platform: Desktop

Date tested: 6 months ago

Test name	Executions per second
replaceChildren	135.7 Ops/sec
while w/ appendChild	84.4 Ops/sec
replaceChildren w/ fragments	139.4 Ops/sec
innerHTML w/ fragments	93.1 Ops/sec
while w/ fragments	87.8 Ops/sec

HTML Preparation code:

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

Script Preparation code:

const node = document.getElementById('container');

for(let i = 0; i < 10000; i++) {
	node.appendChild(document.createElement('div'));
}

Tests:

replaceChildren
const node = document.getElementById('container'); const elems = []; for(let i = 0; i < 10000; i++) { elems.push(document.createElement('div')); } node.replaceChildren(...elems);
while w/ appendChild
const node = document.getElementById('container'); const elems = []; for(let i = 0; i < 10000; i++) { elems.push(document.createElement('div')); } while (node.firstChild) { node.removeChild(node.lastChild); } for(let i = 0; i < 10000; i++) { node.appendChild(elems[i]); }
replaceChildren w/ fragments
const fragment = document.createDocumentFragment(); const node = document.getElementById('container'); const elems = []; for(let i = 0; i < 10000; i++) { elems.push(document.createElement('div')); } for(let i = 0; i < 10000; i++) { fragment.appendChild(elems[i]); } node.replaceChildren(fragment);
innerHTML w/ fragments
const fragment = document.createDocumentFragment(); const node = document.getElementById('container'); const elems = []; for(let i = 0; i < 10000; i++) { elems.push(document.createElement('div')); } for(let i = 0; i < 10000; i++) { fragment.appendChild(elems[i]); } node.innerHTML = ''; node.appendChild(fragment);
while w/ fragments
const fragment = document.createDocumentFragment(); const node = document.getElementById('container'); const elems = []; for(let i = 0; i < 10000; i++) { elems.push(document.createElement('div')); } for(let i = 0; i < 10000; i++) { fragment.appendChild(elems[i]); } while (node.firstChild) { node.removeChild(node.lastChild); } node.appendChild(fragment);

Run results for: replaceChildren VS while+appendChild VS replaceChildren+fragment VS innerHTML+fragment VS while+fragment

replaceChildren VS while+appendChild VS replaceChildren+fragment VS innerHTML+fragment VS while+fragment

replaceChildren

while w/ appendChild

replaceChildren w/ fragments

innerHTML w/ fragments

while w/ fragments