The getPose() method of the VRDisplay interface returns a VRPose object defining the future predicted pose of the VRDisplay as it will be when the current frame is actually presented.

None.

A VRPose object.

Once we have a reference to a VRDisplay object, we can retrieve the VRPose representing the current pose of the display.

if (navigator.getVRDisplays) {
  console.log("WebVR 1.1 supported");
  // Then get the displays attached to the computer
  navigator.getVRDisplays().then((displays) => {
    // If a display is available, use it to present the scene
    if (displays.length > 0) {
      vrDisplay = displays[0];
      console.log("Display found");

      // Return the current VRPose object for the display
      const pose = vrDisplay.getPose();

      // …
    }
  });
}

It is however recommended that you use the non-deprecated pose property of the VRFrameData object (retrieved via VRDisplay.getFrameData()) to retrieve the current pose for each frame before it is submitted to the display to be presented. This happens on each iteration of the rendering loop for your app, so you can be sure the pose data is current.

This method was part of the old WebVR API that has been superseded by the WebXR Device API. It is no longer on track to becoming a standard.

Until all browsers have implemented the new WebXR APIs, it is recommended to rely on frameworks, like A-Frame, Babylon.js, or Three.js, or a polyfill, to develop WebXR applications that will work across all browsers [1].

• WebVR API homepage
• https://mixedreality.mozilla.org/ — demos, downloads, and other resources from the Mozilla VR team.