Run results for: lenth count tag vs dom

Run details:

User agent: Mozilla/5.0 (Linux; Android 9; G8142) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.120 Mobile Safari/537.36

Browser: Chrome Mobile 91

Operating system: Android

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
tag count	12904.0 Ops/sec
dom count	809804.1 Ops/sec

HTML Preparation code:

<html>
  
</html>

Script Preparation code:

mainbox = document.createElement('div');
document.body.appendChild(mainbox);

for (var i=0; i<100;i++){
                          
 newIframe = document.createElement('iframe');                          
 mainbox.append(newIframe);                      
                          
}

Tests:

tag count
var mainboxinnerHTML=mainbox.innerHTML; var newIframeLength = mainboxinnerHTML.split(/<iframe/i).length - 1;
dom count
var newIframe = mainbox.getElementsByTagName("iframe"); var newIframeLength2 = newIframe.length;

Run results for: lenth count tag vs dom

tag count

dom count