Run results for: innerHTML vs insertAdjacentHTML vs appendChild vs insertAdjacentElement 2025

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

1) innerHTML

307K/s

2) insertAdjacentHTML

272K/s

View exact numbers

Test name	Executions per second
✓ 1) innerHTML	307,005 Ops/sec
2) insertAdjacentHTML	272,206 Ops/sec

HTML Preparation code:

<section>
  <div>
    <ul>
      <li>List item</li>
      <li>List item</li>
      <li>List item</li>
      <li>List item</li>
      <li>List item</li>
      <li>List item</li>
      <li>List item</li>
      <li>List item</li>
    </ul>
  </div>
</section>

Script Preparation code:

 let div = document.querySelector("div");

Tests:

1) innerHTML
div.innerHTML = 'Paragraph of textParagraph of textParagraph of textParagraph of textParagraph of text';
2) insertAdjacentHTML
div.replaceChildren(); div.insertAdjacentHTML('beforeend', 'Paragraph of textParagraph of textParagraph of textParagraph of textParagraph of text');