Run results for: html createElement vs dom parser

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 17

Operating system: iOS 17.4.1

Device Platform: Mobile

Date tested: 2 years ago

createElement

162K/s

dom parser

76K/s

View exact numbers

Test name	Executions per second
✓ createElement	162,003 Ops/sec
dom parser	75,596 Ops/sec

HTML Preparation code:

<html>
  <head>
  </head>
  <body>
    <main class="main">
    </main>
  </body>
</html>

Tests:

dom parser
const parser = new DOMParser(); const doc = parser.parseFromString(`<html> <head> </head> <body> <main class="main"> <h1>moo</h1> </main> </body> </html>`, 'text/html'); const newMain = doc.querySelector('.main'); document.querySelector('.main').replaceWith(newMain);
createElement
const doc = document.createElement('html'); doc.innerHTML = `<html> <head> </head> <body> <main class="main"> <h1>moo</h1> </main> </body> </html>`; const newMain = doc.querySelector('.main'); document.querySelector('.main').replaceWith(newMain);