Run results for: getBoundingClientRect vs offsetLeft

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser: Chrome 137

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

getBoundingClientRect

2.5M/s

offsetLeft

2.2M/s

View exact numbers

Test name	Executions per second
✓ getBoundingClientRect	2,453,267 Ops/sec
offsetLeft	2,176,614 Ops/sec

HTML Preparation code:

<div id="test"></div>

Tests:

getBoundingClientRect
let element = document.getElementById('test'); let rect = element.getBoundingClientRect(); let left = rect.left;
offsetLeft
let element = document.getElementById('test'); let left = element.offsetLeft