Experimental
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. |
Draft | Initial definition |
Browser compatibility
BCD tables only load in the browser
See also
- WebVR API homepage
- https://mixedreality.mozilla.org/ — demos, downloads, and other resources from the Mozilla VR team.