ExtendableEvent() - Web APIs 编辑

The ExtendableEvent() constructor creates a new ExtendableEvent object.

Syntax

var extendableEvent = new ExtendableEvent(type, init);

Parameters

type

The type of the ExtendableEvent, for example install, activate.

init Optional

An options object containing any custom settings that you want to apply to the event object. Currently no possible options exist inside the spec, but this has been defined for forward compatibility across the different derived events.

Specifications

Browser compatibility

BCD tables only load in the browser

See also

• Using Service Workers
• Service workers basic code example
• Is ServiceWorker ready?
• Promise
• Using web workers