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.


var isItConnected = vrDisplayInstance.isConnected;


A Boolean; true means the display is connected; false means it isn't.


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');


Specification Status Comment
WebVR 1.1
The definition of 'isConnected' in that specification.
Draft Initial definition

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support No15



No ? ?
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support No561 2 3 4 ? ? ? ?6.0

1. Only works in an experimental version of Chrome. (Other builds won't return any devices when Navigator.getVRDisplays() is invoked.)

2. Daydream View supported in Chrome 56.

3. Google Cardboard supported in Chrome 57.

4. From version 56: this feature is behind the WebVR preference. To change preferences in Chrome, visit chrome://flags.

5. Windows support was enabled in Firefox 55.

6. macOS support was enabled in Firefox 63.

See also

Document Tags and Contributors

Contributors to this page: jpmedley, fscholz, chrisdavidmills, abbycar
Last updated by: jpmedley,