Run results for: offsetWidth / offsetHeight vs. getBoundingClientRect()

Run details:

User agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:148.0) Gecko/20100101 Firefox/148.0 r3dfox/148.0.2

Browser: Firefox 148

Operating system: Windows 8.1

Device Platform: Desktop

Date tested: 26 days ago

Test name	Executions per second
offsetWidth / offsetHeight (destructured and renamed)	3784439.2 Ops/sec
offsetWidth / offsetHeight (destructured)	3824581.5 Ops/sec
offsetWidth / offsetHeight (simple property access)	3744000.2 Ops/sec
getBoundingClientRect() (destructured)	2089344.0 Ops/sec
getBoundingClientRect() (simple property access)	2109835.0 Ops/sec

HTML Preparation code:

<div id="el">
  <h2>Lorem ipsum dolor sit amet</h2>
</div>

Script Preparation code:

var el = document.getElementById("el");

Tests:

offsetWidth / offsetHeight (destructured and renamed)
const { offsetWidth: width, offsetHeight: height } = el; const perim = (width + height) * 2;
offsetWidth / offsetHeight (destructured)
const { offsetWidth, offsetHeight } = el; const perim = (offsetWidth + offsetHeight) * 2;
offsetWidth / offsetHeight (simple property access)
const width = el.offsetWidth; const height = el.offsetHeight; const perim = (width + height) * 2;
getBoundingClientRect() (destructured)
const { width, height } = el.getBoundingClientRect(); const perim = (width + height) * 2;
getBoundingClientRect() (simple property access)
const rect = el.getBoundingClientRect(); const width = rect.width; const height = rect.height; const perim = (width + height) * 2;