Syntax

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

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

ondisconnect = (event) => { }

Event type

A USBConnectionEvent. Inherits from Event.

Event properties

In addition to the properties listed below, properties from the parent interface, Event, are available.

device Read only

The USBDevice the event is fired for.

Examples

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

navigator.usb.addEventListener("disconnect", (event) => {
  // Remove event.device from the UI.
});

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

navigator.usb.ondisconnect = (event) => {
  // Remove event.device from the UI.
};

Specifications

Browser compatibility