How can I get the browser's scrollbar sizes?

Question

How can I determine the height of a horizontal scrollbar, or the width of a vertical one, in JavaScript?

Answer 1

It seems to work, but maybe there is a simpler solution that works in all browsers?

// Create the measurement node
var scrollDiv = document.createElement("div");
scrollDiv.className = "scrollbar-measure";
document.body.appendChild(scrollDiv);

// Get the scrollbar width
var scrollbarWidth = scrollDiv.offsetWidth - scrollDiv.clientWidth;
console.info(scrollbarWidth); // Mac:  15

// Delete the DIV 
document.body.removeChild(scrollDiv);

.scrollbar-measure {
	width: 100px;
	height: 100px;
	overflow: scroll;
	position: absolute;
	top: -9999px;
}