VisualViewport.scale

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

The scale read-only property of the VisualViewport interface returns the pinch-zoom scaling factor applied to the visual viewport.

Syntax

var scale = VisualViewport.scale

A double.

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

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
Basic support Experimental	Chrome Full support 61	Edge No support No	Firefox Full support 63 Disabled Full support 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.	IE No support No	Opera Full support 48	Safari No support No	WebView Android Full support 61	Chrome Android Full support 61	Edge Mobile No support No	Firefox Android Full support 63 Disabled Full support 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.	Opera Android Full support 48	Safari iOS No support No	Samsung Internet Android ?

Full support: Full support
No support: No support
Compatibility unknown: Compatibility unknown
Experimental. Expect behavior to change in the future.: Experimental. Expect behavior to change in the future.
User must explicitly enable this feature.: User must explicitly enable this feature.