The
Extendable
MessageEvent()
constructor creates a new ExtendableMessageEvent
object instance.
Syntax
var extendableMessageEvent = new ExtendableMessageEvent(type, init);
Parameters
- type
- A
DOMString
that defines the type of the message event being created. - init Optional
- An initialisation object, which should contain the following parameters:
data
: The event's data — this can be any data type.origin
: ADOMString
that defines the origin of the corresponding service worker's environment settings object.lastEventId
: ADOMString
that defines the last event ID of the event source.source
: TheClient
,ServiceWorker
orMessagePort
that sent the message.ports
: An array containing theMessagePort
objects connected to the channel sending the message.
Examples
var init = {
data : 'hello message',
source : MessagePortReference,
ports : MessagePortListReference
}
var myEME = new ExtendableMessageEvent('message', init);
Specifications
Specification | Status | Comment |
---|---|---|
Service Workers The definition of 'ExtendableMessageEvent()' in that specification. |
Working Draft | Initial definition. |
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