Run results for: getBoundingClientRect vs getAttribute

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36 Edg/145.0.0.0

Browser: Chrome 145

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 4 months ago

getAttribute

13.2M/s

getBoundingClientRect

2.0M/s

View exact numbers

Test name	Executions per second
✓ getAttribute	13,200,565 Ops/sec
getBoundingClientRect	2,011,859 Ops/sec

HTML Preparation code:

<div id="test" data-height="20"></div>

Tests:

getBoundingClientRect
let element = document.getElementById('test'); let rect = element.getBoundingClientRect(); let height = rect.height;
getAttribute
let element = document.getElementById('test'); let heightAttr = element.getAttribute('data-height'); let height = (heightAttr && Number.parseInt(heightAttr, 10)) || 0;