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Window innerWidth and innerHeight Properties

❮ Window Object

Example

Get the current frame's height and width:

var w = window.innerWidth;
var h = window.innerHeight;
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More "Try it Yourself" examples below.


Definition and Usage

The innerWidth property returns the width of a window's content area.

The innerHeight property returns the height of a window's content area.

These properties are read-only.

Tip: Use the outerWidth and outerHeight properties to get the width/height of the browser window.


Browser Support

The numbers in the table specify the first browser version that fully supports the property.

Property
innerWidth 1.0 9.0 1.0 3.0 9.0
innerHeight 1.0 9.0 1.0 3.0 9.0

Note: For IE8 and earlier, you can use the clientWidth and clientHeight properties (See "More Examples" below).


Syntax

window.innerWidth
window.innerHeight


Technical Details

Return Value: A Number, representing the width and/or the inner height of the browser window's content area, in pixels

More Examples

Example

A cross-browser solution (using clientWidth and clientHeight for IE8 and earlier):

var w = window.innerWidth
|| document.documentElement.clientWidth
|| document.body.clientWidth;

var h = window.innerHeight
|| document.documentElement.clientHeight
|| document.body.clientHeight;
Try it Yourself »

Example

A demonstration of innerWidth, innerHeight, outerWidth and outerHeight in one example:

var txt = "";
txt += "<p>innerWidth: " + window.innerWidth + "</p>";
txt += "<p>innerHeight: " + window.innerHeight + "</p>";
txt += "<p>outerWidth: " + window.outerWidth + "</p>";
txt += "<p>outerHeight: " + window.outerHeight + "</p>";
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❮ Window Object