RTCDataChannel.onopen

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句法
范例
规范
浏览器兼容性
另请参阅
相关话题

这是实验性技术
检查浏览器兼容性表格要小心谨慎在生产中使用这之前。

RTCDataChannel.onopen property is an EventHandler which specifies a function to be called when the open event is fired; this is a simple 事件 which is sent when the data channel's underlying data transport—the link over which the RTCDataChannel 's messages flow—is established or re-established.

句法

RTCDataChannel.onopen = function;

值

A function which the browser will call to handle the open event. The function receives as its only input parameter the event itself, of type 事件 .

范例

This example adds a new data channel to an existing RTCPeerConnection , myPeerConnection . It then establishes an open event handler which updates some user interface elements to prepare them for being used to send messages over the data channel.

let dc = myPeerConnection.createDataChannel("Message Channel");
dc.onopen = function(event) {
  let messageBox = document.getElementById("messageBox");
  let sendButton = document.getElementById("sendButton");
  messageBox.disabled = false;
  messageBox.focus();
  sendButton.disabled = false;
}

规范

规范	状态	注释
WebRTC 1.0: Real-time Communication Between Browsers The definition of 'RTCDataChannel.onopen' in that specification.	候选推荐	最初的规范。

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
`onopen`	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
不支持
实验。期望将来行为有所改变。

另请参阅

WebRTC
open event and its type, 事件 .
RTCDataChannel.onclose
close event and its type, 事件 .

元数据

最后修改： 2019 年 3 月 23 日

WebRTC API
RTCDataChannel
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~~
方法
1. close()
2. send()
继承：
1. EventTarget
Related pages for WebRTC

在此页

句法

值

范例

规范

浏览器兼容性

图例

另请参阅

相关话题