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Run results for:
JS: insertBefore vs append vs prepend
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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
Test name
Executions per second
insertBefore
21809.1 Ops/sec
append
13645.5 Ops/sec
prepend
3493.1 Ops/sec
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 ) ) );