HID: connect event

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

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 connect event of the HID interface fires when the user agent connects to a HID device.

Syntax

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

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

onconnect = (event) => { }

Event type

A HIDConnectionEvent. Inherits from Event.

Event HIDConnectionEvent

Event properties

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

device Read only

The HIDDevice the event is fired for.

Examples

In the following example an event listener is registered to listen for the connection of a device. The name of the device is then printed to the console using HIDDevice.productName.

js
navigator.hid.addEventListener("connect", ({ device }) => {
  console.log(`HID connected: ${device.productName}`);
});

Specifications

Specification
WebHID API
# dom-hid-onconnect

Browser compatibility

desktop mobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
connect event
Experimental
Chrome – Full support
Chrome 89 (Release date: 2021-03-02)
footnote Full support
Edge – Full support
Edge 89 (Release date: 2021-03-04)
footnote Full support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 75 (Release date: 2021-03-24)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – No support
Chrome Android
footnote No support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – No support
Opera Android
footnote No support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – No support
Samsung Internet
footnote No support
WebView Android – No support
WebView Android
footnote No support
WebView on iOS – No support
WebView on iOS
footnote No support

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support
Experimental. Expect behavior to change in the future.