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);


Specification Status Comment
Network Information API
The definition of 'onchange' in that specification.
Draft Initial definition

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Chrome Full support 61Edge Full support 79Firefox No support NoIE No support NoOpera Full support 48Safari No support NoWebView Android Full support 50Chrome Android Full support 38Firefox Android No support No
No support No
Notes On Firefox, the event handler property corresponding to the change event is ontypechange.
Opera Android Full support 45Safari iOS No support NoSamsung Internet Android Full support 3.0


Full support  
Full support
No support  
No support
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.
See implementation notes.
See implementation notes.