ExtendableEvent: ExtendableEvent() constructor
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2018.
Note: This feature is only available in Service Workers.
The ExtendableEvent() constructor creates a new ExtendableEvent object.
Syntax
js
new ExtendableEvent(type)
new ExtendableEvent(type, options)
Parameters
type-
A string with the name of the event. It is case-sensitive.
optionsOptional-
An object that, in addition of the properties defined in
Event(), can contain any custom settings that you want to apply to the event object. Currently no possible options are mandatory, but this has been defined for forward compatibility across the different derived events.
Return value
A new ExtendableEvent object.
Specifications
| Specification |
|---|
| Service Workers # dom-extendableevent-extendableevent |
Browser compatibility
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