USB

属性

None.

Event handlers

USB.onconnect

每当连接到先前配对的设备时，调用此事件处理器。

USB.ondisconnect

每当配对设备断开连接时，调用此事件处理器。

方法

USB.getDevices()

Returns a Promise that resolves with an array of USBDevice objects for paired attached devices.

USB.requestDevice()

Returns a Promise that resolves with an instance of USBDevice if the specified device is found. Calling this function triggers the user agent's pairing flow.

规范

Browser compatibility