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VisualViewport.height

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The height read-only property of the VisualViewport interface returns the height of the visual viewport, in CSS pixels.

var height = VisualViewport.height

A double.

Specification	Status	Comment
Visual Viewport API The definition of 'height' in that specification.	Draft	Initial definition.

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	61	No	63 Disabled 63 Disabled Disabled From version 63: this feature is behind the `dom.visualviewport.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	No	48	No

	Mobile
	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	iOS Safari	Samsung Internet
Basic support	61	61	No	63 Disabled 63 Disabled Disabled From version 63: this feature is behind the `dom.visualviewport.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	48	No	?

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https://developer.mozilla.org/en-US/docs/Web/API/VisualViewport/height