USB
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
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
.
Instance properties
None.
Instance methods
USB.getDevices()
Experimental-
Returns a
Promise
that resolves with an array ofUSBDevice
objects for paired attached devices. USB.requestDevice()
Experimental-
Returns a
Promise
that resolves with an instance ofUSBDevice
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
Specification |
---|
WebUSB API # usb |
Browser compatibility
BCD tables only load in the browser