Run results for: JS: insertBefore vs append vs prepend

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36

Browser: Chrome 135

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

insertBefore

22K/s

append

14K/s

prepend

3K/s

View exact numbers

HTML Preparation code:

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

Script Preparation code:

var container = document.getElementById("container");
var paragraphs = new Array( 100 ).fill( 'p' );

Tests:

insertBefore
paragraphs.forEach( p => container.insertBefore( document.createElement( p ), null ) );
append
container.append( ...paragraphs.map( p => document.createElement( p ) ) );
prepend
paragraphs.forEach( p => container.prepend( document.createElement( p ) ) );