This is a simple code of a clock with a React frontend and a backend in Node.
The backend generates the current time every second and transmits it to the frontend via a websocket.

Dependecies : 
npm install --save react-router-dom // for React
npm install socket.io // for Socket.io : 


To compile : 
cd backend and npm start //to start the server
cd frontend and npm start //to start Client UI