USB

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

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WebUSB API 接口提供了从网页查找和连接 USB 设备的属性和方法

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

Specification
WebUSB API
# usb

Browser compatibility

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