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Height (in pixels) of the browser window viewport including, if rendered, the horizontal scrollbar.

Note: If you use nsIDOMWindowUtils.setCSSViewport() to set the virtual window size for page layout purposes, the value returned by this property corresponds to the viewport height set using that method.

Syntax

var intViewportHeight = window.innerHeight;

Value

On return, intViewportHeight is the height of the browser window's viewport.

The window.innerHeight property is read only; it has no default value.

Notes

The innerHeight property is supported in any window object like a window, a frame, a frameset, or a secondary window.

There is an algorithm to obtain the height of the viewport excluding, if rendered, the horizontal scrollbar.

Example

Assuming a frameset

var intFrameHeight = window.innerHeight; // or

var intFrameHeight = self.innerHeight;
// will return the height of the frame viewport within the frameset

var intFramesetHeight = parent.innerHeight;
// will return the height of the viewport of the closest frameset

var intOuterFramesetHeight = top.innerHeight;
// will return the height of the viewport of the outermost frameset

FIXME: link to an interactive demo here

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

To get the outer height of a window, i.e. the height of the whole browser window, see window.outerHeight.

Graphical example

The following figure shows the difference between outerHeight and innerHeight.

innerHeight vs outerHeight illustration

Specification

Specification Status Comment
CSS Object Model (CSSOM) View Module
The definition of 'window.innerHeight' in that specification.
Working Draft Initial definition

Browser compatibility

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

[1] From Firefox 4 to 24 this property was buggy and could give a wrong value before page load on certain circumstances, see bug 641188.

See also

Document Tags and Contributors

 Last updated by: mrenty,