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Window.outerWidth gets the width of the outside of the browser window. It represents the width of the whole browser window including sidebar (if expanded), window chrome and window resizing borders/handles.

This property is read-only; it has no default value.


outWindowWidth = window.outerWidth;

On return, outWindowWidth is the width of the outside of the window.


To change the size of a window, see window.resizeBy() and window.resizeTo().

To get the inner width of a window, i.e. the width of the page being displayed, see window.innerWidth.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support 1 1.0 (1.7 or earlier) 9 9 3
Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support 1 1.0 (1.0) 9 9 3


DOM Level 0. Not part of any W3C technical specification or recommendation. the To do in Notes

See also

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 Last updated by: Sheppy,