RTCDataChannel.onclose

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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.onclose property is an EventHandler which specifies a function to be called by the browser when the close event is received by the RTCDataChannel . This is a simple 事件 which indicates that the data channel has closed down.

句法

RTCDataChannel.onclose = function;

值

A function which the browser will call to handle the close event. The function receives as its sole input parameter the event itself, as an object of type 事件 .

范例

In this sample from a hypothetical instant messaging client, a data channel is created, then handlers for the open and close events are set up to enable and disable user interface objects based on the state of the channel. This way, the message entry field and the send button are only enabled for use when the connection is actually open.

let pc = new RTCPeerConnection();
let dc = pc.createDataChannel("MessageChannel")}};
dc.onopen = function(event) {
  document.getElementById("messageBox").disabled = false;
  document.getElementById("sendButton").disabled = false;
};
dc.onclose = function(event) {
  document.getElementById("messageBox").disabled = true;
  document.getElementById("sendButton").disabled = true;
}
/* Now negotiate the connection, etc... */

规范

规范	状态	注释
WebRTC 1.0: Real-time Communication Between Browsers The definition of 'RTCDataChannel.onclose' 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
`onclose`	Chrome 56	Edge ≤79	Firefox Yes	IE No	Opera 43	Safari No	WebView Android 56	Chrome Android 56	Firefox Android Yes	Opera Android 43	Safari iOS No	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
close event and its type, 事件 .
RTCDataChannel.onopen
open 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

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句法

值

范例

规范

浏览器兼容性

图例

另请参阅

相关话题