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This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.
The ExtendableEvent() constructor creates a new ExtendableEvent object.
Syntax
var myExtendableEvent = 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
| Specification | Status | Comment |
|---|---|---|
| Service Workers The definition of 'ExtendableEvent' in that specification. |
Working Draft | Initial definition. |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|
| Basic support | 40.0 | 44.0 (44.0)[1] | No support | 24 | No support |
| Feature | Android | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile | Chrome for Android |
|---|---|---|---|---|---|---|---|
| Basic support | ? | 44.0 (44.0) | (Yes) | No support | ? | No support | ? |
[1] Service workers (and Push) have been disabled in the Firefox 45 Extended Support Release (ESR.)
See also
Document Tags and Contributors
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chrisdavidmills,
kscarfone
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