I wonder if it would be practical to make a VPN-like service that acts like a middleman and handles all the JS code, forwarding only HTML, stylesheets and other

I wonder if it would be practical to make a VPN-like service that acts like a middleman and handles all the JS code, forwarding only HTML, stylesheets and other static assets to the client using websockets. So something like a hover or click event would be sent to the server, which would run the javascript code and it would send back the resulting changes to the DOM which the browser can render.