VRDisplay: isConnected property
Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see thecompatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
Non-standard: This feature is not standardized. We do not recommend using non-standard features in production, as they have limited browser support, and may change or be removed. However, they can be a suitable alternative in specific cases where no standard option exists.
TheisConnected read-only property of theVRDisplay interface returns a boolean value indicating whether theVRDisplay is connected to the computer.
Note:This property was part of the oldWebVR API. It has been superseded by theWebXR Device API.
Value
A boolean value;true means the display is connected;false means it isn't.
Examples
navigator.getVRDisplays().then((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", () => { // Only request presentation if the display is still connected. if (vrDisplay.isConnected) { vrDisplay.requestPresent([{ source: canvas }]).then(() => { // start rendering the app, etc. }); } else { console.log("Connection to display lost"); } }); }});Specifications
This property was part of the oldWebVR API that has been superseded by theWebXR Device API. It is no longer on track to becoming a standard.
Until all browsers have implemented the newWebXR APIs, it is recommended to rely on frameworks, likeA-Frame,Babylon.js, orThree.js, or apolyfill, to develop WebXR applications that will work across all browsers. ReadMeta's Porting from WebVR to WebXR guide for more information.