Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
 The NetworkInformation.onchange event handler contains the code that is fired when connection information changes, and the change is received by the NetworkInformation object. 
netInfo.onchange = function() { ... }
// Get the connection type. var type = navigator.connection.type; function changeHandler(e) { // Handle change of connection type here. } // Register for event changes: navigator.connection.onchange = changeHandler; // Another way: navigator.connection.addEventListener('change', changeHandler);
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
onchange | 
61  | 
79  | 
No  | 
No  | 
48  | 
No  | 
50  | 
38  | 
 No 
On Firefox, the event handler property corresponding to the  
change event is ontypechange. | 
45  | 
No  | 
3.0  | 
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    https://developer.mozilla.org/en-US/docs/Web/API/NetworkInformation/onchange