Run results for: getBoundingClientRect vs window.getComputedStyle + new WebKitCSSMatrix

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/119.0

Browser: Firefox 119

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
getBoundingClientRect	1858179.5 Ops/sec
window.getComputedStyle + new WebKitCSSMatrix	769369.4 Ops/sec

HTML Preparation code:

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

Tests:

getBoundingClientRect
let element = document.getElementById('test'); let rect = element.getBoundingClientRect(); let left = rect.left;
window.getComputedStyle + new WebKitCSSMatrix
let element = document.getElementById('test'); let style = window.getComputedStyle(element); let matrix = new WebKitCSSMatrix(style.transform); let left = matrix.m41;