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

Value

A double.

Specifications

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

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
scale
Experimental
Chrome Full support 61Edge No support NoFirefox 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 NoOpera Full support 48Safari No support NoWebView Android Full support 61Chrome Android Full support 61Firefox Android Full support 68
Full support 68
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 45Safari iOS No support NoSamsung Internet Android ?

Legend

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.