Run results for: JS: append vs appendChild multiple nodes

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.0.1 Safari/605.1.15

Browser: Safari 18

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

appendChild

12K/s

append

10K/s

document.fragment

5K/s

View exact numbers

HTML Preparation code:

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

Script Preparation code:

var paragraphs = Array.from({length: 1000}, () => document.createElement("p"));
var container = document.getElementById("container");

Tests:

append
container.append(...paragraphs);
appendChild
for (let i = 0; i < paragraphs.length; i++) { container.appendChild(paragraphs[i]); }
document.fragment
const fragment = new DocumentFragment(); for (let i = 0; i < paragraphs.length; i++) { fragment.append(paragraphs[i]); } container.append(fragment);