Run results for: replaceWith vs replaceChild

Run details:

User agent: Mozilla/5.0 (Linux; Android 8.0.0; FIG-LA1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.50 Mobile Safari/537.36

Browser: Chrome Mobile 95

Operating system: Android 8.0.0

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
replaceWith	4.5 Ops/sec
replaceChild	2.9 Ops/sec

HTML Preparation code:

<html>

  
  
</html>

Script Preparation code:

parentBox = document.createElement('div');
document.body.appendChild(parentBox);

Tests:

replaceWith
var Iframe1 = []; var Video1 = []; for (var i = 0; i < 10; i++) { Iframe1[i] = document.createElement('iframe'); parentBox.appendChild(Iframe1[i]); Video1[i] = document.createElement('video'); } for (var w = 9; w > -1; w--) { Iframe1[w].replaceWith(Video1[w]); }
replaceChild
var Iframe2 = []; var Video2 = []; for (var i = 0; i < 10; i++) { Iframe2[i] = document.createElement('iframe'); parentBox.appendChild(Iframe2[i]); Video2[i] = document.createElement('video'); } for (var c = 9; c > -1; c--) { parentBox.replaceChild(Video2[c], Iframe2[c]); }