The ExtendableMessageEvent()
constructor creates a new ExtendableMessageEvent
object instance.
ExtendableMessageEvent()
Syntax
new ExtendableMessageEvent(type, init);
Parameters
- type
-
A
DOMString
that defines the type of the message event being created. - init Optional
-
An initialization 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
Browser compatibility
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
ExtendableMessageEvent |
51
|
17
|
44
Extended Support Releases (ESR) before Firefox 78 ESR do not support service workers and the Push API.
|
No
|
38
|
11.1
|
51
|
51
|
44
|
41
|
11.3
|
5.0
|
See also
© 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/ExtendableMessageEvent/ExtendableMessageEvent