close
event is sent to the
onclose
event handler on an
RTCDataChannel
instance when the data transport being used for the data channel has closed.
Before any further data can be transferred using
RTCDataChannel
, a new data channel instance must be created.
| 冒泡 | No |
|---|---|
| 可取消 | No |
| 接口 |
事件
|
| 事件处理程序特性 |
RTCDataChannel.onclose
|
This example sets up a handler for the
close
事件为
RTCDataChannel
命名
dc
; its responsibility in this example is to update user interface elements to reflect that there is no longer an ongoing call, and to allow a new call to be started.
dc.addEventListener("close", ev => {
messageInputBox.disabled = true;
sendButton.disabled = true;
connectButton.disabled = false;
disconnectButton.disabled = true;
}, false);
All this code does in response to receiving the
close
event is to disable an input box and its "Send" button, and to enable the button used to start a call (while disabling the one that ends a call).
还可以使用
onclose
event handler property to set a handler for
close
事件：
dc.onclose = ev => {
messageInputBox.disabled = true;
sendButton.disabled = true;
connectButton.disabled = false;
disconnectButton.disabled = true;
}
| 规范 | 状态 | 注释 |
|---|---|---|
|
WebRTC 1.0: Real-time Communication Between Browsers
The definition of 'close' in that specification. |
候选推荐 | 最初的规范。 |
No compatibility data found. Please contribute data for "event.RTCDataChannel.close_event" (depth: 1) to the MDN 兼容性数据存储库 .
open
,
message
，和
error