Run results for: getBoundingClientRect vs offset performance

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36

Browser: Chrome 138

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 9 months ago

Test name	Executions per second
getBoundingClientRect	2389662.2 Ops/sec
offset	1246895.0 Ops/sec

HTML Preparation code:

<div id="test" style="position: absolute; left: 10%; top: 20%;">Test</div>

Tests:

getBoundingClientRect
const testDiv = document.getElementById('test'); const testRect = testDiv.getBoundingClientRect(); const x = testRect.left + testRect.width / 2;
offset
const testDiv = document.getElementById('test'); const y = testDiv.offsetLeft + testDiv.offsetWidth / 2;