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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36 OPR/98.0.0.0 (Edition developer)

Browser: Opera 98

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
getBoundingClientRect	1023244.8 Ops/sec
window.getComputedStyle + new WebKitCSSMatrix	503930.1 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;