The Element.clientWidth property is zero for inline elements and elements with no CSS; otherwise, it's the inner width of an element in pixels. It includes padding but excludes borders, margins, and vertical scrollbars (if present).

When clientWidth is used on the root element (the <html> element), (or on <body> if the document is in quirks mode), the viewport's width (excluding any scrollbar) is returned. This is a special case of clientWidth.

Note: This property will round the value to an integer. If you need a fractional value, use element.getBoundingClientRect().


var intElemClientWidth = element.clientWidth;

intElemClientWidth is an integer corresponding to the clientWidth of element in pixels. The clientWidth property is read–only.




clientWidth was first introduced in the MS IE DHTML object model.

Browser compatibility

BCD tables only load in the browser

See also