Got WebXR VR input working with Hyperbeam remote web browser 
(https://hyperbeam.com/)
The controller acts as a virtual mouse with the joystick being a 'scroll wheel’Works really well, even with WebGL content 
Prototype project: PlayCanvas 3D HTML5 Game Engine
(Don’t forget to read the readme!)
Like the tweet! https://twitter.com/yaustar/status/1638616086932234265