USB - Web APIs | MDN (original) (raw)

Limited availability

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.

Note: This feature is available in Web Workers.

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

Use navigator.usb to get access to the USB object.

The USB interface inherits from EventTarget.

EventTarget USB

Instance properties

None.

Instance methods

USB.getDevices() Experimental

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

USB.requestDevice() Experimental

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.

Events

connect Experimental

Fired whenever a previously paired device is connected.

disconnect Experimental

Fired whenever a paired device is disconnected.

Specifications

Browser compatibility