javascript - How to get the dimensions of a DOM element, minus

How can I get the size of the content-box of a <div> (or any other element) using pure JavaScript? By content-box, I don't mean the size of text inside the div, I mean the element's on-screen

Control an element's width and height - Create Web Page Layouts With CSS - OpenClassrooms

JavaScript: Finding HTML DOM Elements, by Leo Chen

How large DOM sizes affect interactivity, and what you can do about it, Articles

Determining the dimensions of elements - Web APIs

Find the dimensions of a web page element : TechWeb : Boston University

How to Create a Responsive Square with CSS

How to use Inspect Element in Chrome, Safari, and Firefox

Zepto Docs

DOM Element's Dimensions Manipulation

Get started with viewing and changing the DOM, DevTools