HIDDevice: opened property

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 opened read-only property of the HIDDevice interface returns true if the connection to the HIDDevice is open and ready to transfer data.

Value

A boolean value, true if the connection is open.

Examples

The following example retrieves devices with HID.getDevices() and logs the value of opened to the console.

js
document.addEventListener("DOMContentLoaded", async () => {
  let devices = await navigator.hid.getDevices();
  devices.forEach((device) => {
    console.log(`HID: ${device.opened}`);
  });
});

Specifications

Specification
WebHID API
# dom-hiddevice-opened

Browser compatibility

BCD tables only load in the browser