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A MessageEvent is the interface representing a message received by a target, being a WebSocket or a WebRTC RTCDataChannel
The action triggered by this event is set via an event handler set on WebSocket.onmessage or RTCDataChannel.onmessage.
Note: This feature is available in Web Workers.
Constructor
MessageEvent()- Creates a new
MessageEvent.
Properties
This interface also inherits properties from its parent, Event.
MessageEvent.dataRead only- Returns a
DOMString,Blobor anArrayBuffercontaining the data send by the emitter. MessageEvent.origin- Is a
DOMString… MessageEvent.ports- …
MessageEvent.source- …
Methods
This interface also inherits methods from its parent, Event.
MessageEvent.initMessageEvent()- … Do not use this anymore: use the
MessageEvent()constructor instead.
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | ? | 4.0 (2.0)[1] | ? | ? | ? |
| Feature | Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|
| Basic support | ? | ? | ? | ? | ? |
[1] As of Gecko 11.0 (Firefox 11.0 / Thunderbird 11.0 / SeaMonkey 2.8), Gecko supports ArrayBuffer for data, but not Blob.
See also
ExtendableMessageEvent, similar to this interface, and used in interfaces that needs to give more flexibility to authors.- WebSocket API
- WebRTC API
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