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An message event informs the target, a WebSocket, RTCDataConnection or a BroadcastChannel object, that a message has been received.

If the target is a RTCDataConnection, an event handler for this event can be added via the RTCDataConnection.onmessage property.

If the target is a BroadcastChannel, an event handler for this event can be added via the BroadcastChannel.onmessage property.

General info

Interface
MessageEvent
Bubbles
No
Cancelable
No
Target
RTCDataChannelEvent, WebSocket, BroadcastChannel
Default Action
None

Properties

A MessageEvent being an Event, this event also implements these properties.

data 只读
Is a DOMString containing the message received.

Methods

A MessageEvent being an Event, this event also implements these properties.

Specifications

Specification Status Comment
WebRTC 1.0: Real-time Communication Between Browsers
message on RTCDataChannel
Working Draft Adds RTCDataChannel as an EventTarget and defines when this event is sent.
HTML Living Standard
message on BroadcastChannel
Living Standard Adds BroadcastChannel as an EventTarget and defines when this event is sent.

Browser compatibility

  
Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) (Yes) (Yes) 未实现 (Yes) ?
on BroadcastChannel 未实现 未实现 38 (38) 未实现 未实现 未实现
  
Feature Android Chrome for Android Edge Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? ? (Yes) ? 未实现 ? ?
on BroadcastChannel  未实现 未实现 未实现 38.0 (38) 未实现 未实现 未实现

See also

  • WebRTC
  • BroadcastChannel API
  • WebSockets

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