Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
 The onscroll event handler of the VisualViewport interface is called when a viewport is scrolled, i.e. when the scroll event is fired. 
VisualViewport.onscroll = function(e) { ... }
VisualViewport.onscroll = function(e) {
  ...
}
| Specification | 
|---|
| Visual Viewport API  # dom-visualviewport-onscroll  | 
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
onscroll | 
 62 
61 
 | 
79  | 
 91 
66 
 | 
No  | 
 49 
48 
 | 
13  | 
 62 
61 
 | 
 62 
61 
 | 
 68 
66 
 | 
 46 
45 
 | 
13  | 
 8.0 
8.0 
 | 
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    https://developer.mozilla.org/en-US/docs/Web/API/VisualViewport/onscroll