Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
Note: This feature is only available in Service Workers.
The BackgroundFetchEvent() constructor creates a new BackgroundFetchEvent object. This constructor is not typically used as the browser creates these objects itself and provides them to background fetch event callbacks.
new BackgroundFetchEvent(type, options)typeA string with the name of the event. It is case-sensitive and browsers set it to backgroundfetchabort or backgroundfetchclick.
optionsAn object that, in addition of the properties defined in ExtendableEvent(), has the following properties:
registrationA BackgroundFetchRegistration object.
A new BackgroundFetchEvent object.