This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The isConnected
read-only property of the VRDisplay
interface returns a Boolean
indicating whether the VRDisplay
is connected to the computer.
Syntax
var isItConnected = vrDisplayInstance.isConnected;
Value
A Boolean
; true
means the display is connected; false
means it isn't.
Examples
navigator.getVRDisplays().then(function(displays) { // If a display is available, use it to present the scene if(displays.length > 0) { vrDisplay = displays[0]; // Starting the presentation when the button is clicked: It can only be called in response to a user gesture btn.addEventListener('click', function() { // Only request presentation if the display is still connected. if(vrDisplay.isConnected) { vrDisplay.requestPresent([{ source: canvas }]).then(function() { // start rendering the app, etc. }); } else { console.log('Connection to display lost'); } }); } });
Specifications
Specification | Status | Comment |
---|---|---|
WebVR 1.1 The definition of 'isConnected' in that specification. |
Editor's Draft | Initial definition |
Browser compatibility
Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|---|
Basic support | Yes1 2 | Yes | 553 584 | No | ? | ? |
Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
---|---|---|---|---|---|---|---|
Basic support | No | Yes5 | ? | ? | No | ? | ? |
1. Only works on desktop in an experimental version of Chrome (other builds won't return any devices when Navigator.getVRDisplays()
is invoked).
2. This feature is behind the WebVR
preference. To change preferences in Chrome, visit chrome://flags.
3. Windows support was enabled in Firefox 55.
4. macOS support was enabled in Firefox 58.
5. Currently supported only by Google Daydream.
See also
- WebVR API homepage
- MozVr.com — demos, downloads, and other resources from the Mozilla VR team.