offsetWidth property

The offsetWidth property contains the full width of an element (includes the actual element width, border width, padding, scrollbars):

Syntax

element.offsetWidth;

Let's find out the full size of an element:

<div id="elem"></div>

#elem {
	width: 100px;
	height: 100px;
	padding: 15px;
	border: 10px solid black;
}

let elem = document.querySelector('#elem');
console.log(elem.offsetWidth);

The code execution result:

150

If an element is hidden, then offsetWidth is equal to 0:

<div id="elem"></div>

#elem {
	display: none; /* hidden element */
	width: 100px;
	height: 100px;
	padding: 15px;
	border: 10px solid black;
}

let elem = document.querySelector('#elem');
console.log(elem.offsetWidth);

The code execution result:

0