Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
Note: This feature is available in Web Workers, except for Shared Web Workers.
The HIDConnectionEvent interface of the WebHID API represents HID connection events, and is the event type passed to connect and disconnect event handlers when a device's connection state changes.
HIDConnectionEvent() Returns a new HIDConnectionEvent object. Typically this constructor is not used as events are created when a device's connection state changes.
This interface also inherits properties from Event.
HIDConnectionEvent.device Read only Returns the HIDDevice instance representing the device associated with the connection event.
The following example registers event listeners for connect and disconnect events, then prints the HIDDevice.productName to the console.
navigator.hid.addEventListener("connect", ({ device }) => {
console.log(`HID connected: ${device.productName}`);
});
navigator.hid.addEventListener("disconnect", ({ device }) => {
console.log(`HID disconnected: ${device.productName}`);
});