Run results for: clientWidth vs offsetWidth vs window.getComputedStyle

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:85.0) Gecko/20100101 Firefox/85.0

Browser: Firefox 85

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 2 years ago

HTML Preparation code:

<div id="teste">teste</div>

Script Preparation code:

var teste_n = '123px';
var _style = window.getComputedStyle(document.getElementById('teste'));

Tests: