USB - Web APIs 编辑

Experimental

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

Secure context

This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

The USB interface of the WebUSB API provides attributes and methods for finding and connecting USB devices from a web page.

Properties

None.

Event handlers

USB.onconnect

An event handler called whenever a previously paired device is connected.

USB.ondisconnect

An event handler called whenever a paired device is disconnected.

Methods

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.

Specifications

Browser compatibility

BCD tables only load in the browser