Index - Web APIs
3970 serviceworkerglobalscope: pushsubscriptionchange event api, push, push api, pushsubscriptionchangeevent, reference, service workers, service workers api, serviceworker, serviceworkerglobalscope, subscription, events the pushsubscriptionchange event is sent to the global scope of a serviceworker to indicate a change in push subscription that was triggered outside the application's control.

ServiceWorkerGlobalScope: pushsubscriptionchange event - Web APIs
bubbles no cancelable no interface pushsubscriptionchangeevent event handler property onpushsubscriptionchange usage notes although examples demonstrating how to share subscription related information with the application server tend to use fetch(), this is not necessarily the best choice for real-world use, since it will not work if the app is offline, for example.