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• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

The WebRTC message event is sent to the onmessage event handler on an RTCDataChannel object when a message has been received from the remote peer.

冒泡	No
可取消	No
接口	MessageEvent
事件处理程序特性	onmessage

注意： message event uses as its event object type the MessageEvent interface defined by the HTML specification.

范例

For a given RTCDataChannel , dc , created for a peer connection using its createDataChannel() method, this code sets up a handler for incoming messages and acts on them by adding the data contained within the message to the current document as a new <p> (paragraph) element.

dc.addEventListener("message", ev => {
  let newParagraph = document.createElement("p");
  let textNode = document.createTextNode(event.data);
  newParagraph.appendChild(textNode);
  document.body.appendChild(newParagraph);
}, false);
					

Lines 2-4 create the new paragraph element and add the message data to it as a new text node. Line 6 appends the new paragraph to the end of the document's body.

You can also use an RTCDataChannel 对象的 onmessage event handler property to set the event handler:

dc.onmessage = ev => {
  let newParagraph = document.createElement("p");
  let textNode = document.createTextNode(event.data);
  newParagraph.appendChild(textNode);
  document.body.appendChild(newParagraph);
}
					

规范

规范	状态	注释
WebRTC 1.0: Real-time Communication Between Browsers The definition of 'the <code>message</code> event' in that specification.	候选推荐

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
message event	Chrome 56	Edge ≤79	Firefox Yes	IE No	Opera 43	Safari Yes	WebView Android 56	Chrome Android 56	Firefox Android Yes	Opera Android 43	Safari iOS Yes	Samsung Internet Android 6.0

图例

完整支持

完整支持

不支持

不支持

另请参阅

• WebRTC API
• A simple RTCDataChannel example
• 相关事件： open , close ，和 error
• RTCDataChannel.send()

元数据

• 最后修改： Mar 18, 2019

相关话题

1. WebRTC API
2. RTCDataChannel
3. 特性

   1. binaryType
   2. bufferedAmount
   3. bufferedAmountLowThreshold
   4. id
   5. label
   6. maxPacketLifeTime
   7. maxRetransmits
   8. negotiated
   9. onbufferedamountlow
   10. onclose
   11. onclosing
   12. onerror
   13. onmessage
   14. onopen
   15. ordered
   16. 协议
   17. readyState
   18. reliable
   19. stream
4. 方法

   1. close()
   2. send()
5. 继承：

   1. EventTarget
6. Related pages for WebRTC

   1. MediaDevices.getUserMedia()
   2. Navigator.mediaDevices
   3. RTCCertificate
   4. RTCDTMFSender
   5. RTCDTMFToneChangeEvent
   6. RTCDataChannelEvent
   7. RTCDtlsTransport
   8. RTCErrorEvent
   9. RTCIceCandidate
   10. RTCIceTransport
   11. RTCPeerConnection
   12. RTCPeerConnectionIceErrorEvent
   13. RTCPeerConnectionIceEvent
   14. RTCRtpReceiver
   15. RTCRtpSender
   16. RTCRtpTransceiver
   17. RTCSctpTransport
   18. RTCSessionDescription
   19. RTCStatsEvent
   20. RTCStatsReport
   21. RTCTrackEvent