The Window.outerHeight read-only property returns the height in pixels of the whole browser window, including any sidebar, window chrome, and window-resizing borders/handles.
The Window.outerHeight read-only property returns the height in pixels of the whole browser window, including any sidebar, window chrome, and window-resizing borders/handles.
To change the size of a window, see window.resizeBy() and window.resizeTo().
To get the inner height of a window, i.e. the height of the page being displayed, see window.innerHeight.
The following figure shows the difference between outerHeight and innerHeight.
  
| Specification | 
|---|
| CSSOM View Module  # dom-window-outerheight  | 
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
outerHeight | 
1 | 12 | 1 | 9 | 9 | 3 | 4.4 | 18 | 4 | 10.1 | 3 | 1.0 | 
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    https://developer.mozilla.org/en-US/docs/Web/API/Window/outerHeight