Run results for: getBoundingClientRect vs getAttribute

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.0

Browser: Firefox 140

Operating system: Linux

Device Platform: Desktop

Date tested: 4 months ago

getAttribute

3.4M/s

getBoundingClientRect

1.4M/s

View exact numbers

Test name	Executions per second
✓ getAttribute	3,407,974 Ops/sec
getBoundingClientRect	1,444,194 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;