Run results for: scrollHeight vs getBoundingClientRect().height

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:133.0) Gecko/20100101 Firefox/133.0

Browser: Firefox 133

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

scrollHeight

11.5M/s

getBoundingClientRect().height

4.1M/s

View exact numbers

Test name	Executions per second
✓ scrollHeight	11,485,159 Ops/sec
getBoundingClientRect().height	4,144,576 Ops/sec

HTML Preparation code:

<div id="el">
  <h2>Lorem ipsum dolor sit amet</h2>
</div>

Script Preparation code:

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

Tests:

scrollHeight
const height = el.scrollHeight;
getBoundingClientRect().height
const height = el.getBoundingClientRect().height;