MIDIConnectionEvent
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
The MIDIConnectionEvent
interface of the Web MIDI API is the event passed to the onstatechange
event of the MIDIAccess
interface and the onstatechange
event of the MIDIPorts
interface. This occurs any time a new port becomes available, or when a previously available port becomes unavailable. 例如,这个事件无论是在一个 MIDI 设备插入或拔出设备时都会触发。
构造函数
MIDIConnectionEvent.MIDIConnectionEvent
-
创建一个新的
MIDIConnectionEvent
对象。
属性
MIDIConnectionEvent.port
-
返回一个
MIDIPort
实例的引用,指明其端口是否已经连接。
举例
规范
Specification |
---|
Web MIDI API # midiconnectionevent-interface |
浏览器兼容性
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