Run results for: JS: replaceWith vs replaceChild2

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36

Browser: Chrome 141

Operating system: Windows

Device Platform: Desktop

Date tested: 9 months ago

replaceChild

1.1M/s

replaceWith

993K/s

View exact numbers

Test name	Executions per second
✓ replaceChild	1,063,846 Ops/sec
replaceWith	992,561 Ops/sec

HTML Preparation code:

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

Script Preparation code:

var container = document.getElementById("container");

Tests:

replaceWith
var paragraph = document.createElement("p"); var existingp = container.querySelector("p"); existingp.replaceWith(paragraph);
replaceChild
var paragraph = document.createElement("p"); var existingp = container.querySelector("p"); container.replaceChild(paragraph, existingp);