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/132.0.0.0 Safari/537.36

Browser: Chrome 132

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

getBoundingClientRect

2.3M/s

offsetLeft

1.7M/s

View exact numbers

Test name	Executions per second
✓ getBoundingClientRect	2,313,466 Ops/sec
offsetLeft	1,731,998 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