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 open() method of the HIDDevice interface requests that the operating system opens the HID device.
Note: HID devices are not opened automatically. Therefore, a HIDDevice returned by HID.requestDevice() must be opened with this method before it is available to transfer data.
open()
None.
A Promise that resolves with undefined once the connection is opened.
InvalidStateError DOMException
Thrown if the connection is already open.
NotAllowedError DOMException
Thrown if the attempt to open the connection fails for any reason.
In the following example, we wait for the HID connection to open before attempting to send or receive data.
await device.open();
| Specification |
|---|
| WebHID API> # dom-hiddevice-open> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
open |
89 | 89 | No | 75 | No | No | No | No | No | No | No | No |
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https://developer.mozilla.org/en-US/docs/Web/API/HIDDevice/open