USB: connect event

Limited availabilitySecure contextAvailable in workers

The connect event of the USB interface is fired whenever a paired device is connected.

Syntax

Use the event name in methods like addEventListener(), or set an event handler property.

addEventListener("connect", (event) => { })

onconnect = (event) => { }

Event type

A USBConnectionEvent. Inherits from Event.

Examples

Once a USB device is connected, you might want to update the UI.

navigator.usb.addEventListener("connect", (event) => {
  // Add event.device to the UI.
});

Alternatively, you can use the USB.onconnect event handler property to establish a handler for the connect event:

navigator.usb.onconnect = (event) => {
  // Add event.device to the UI.
};

Specifications

Browser compatibility