Firstly, we will install npm library in both folder i.e. client and server.
So ,We will run command on both folder i.e. ## npm install
Now,For run the folder,we will run command on both i.e. npm start
Your front end will run on localhost://3000
Your back end will run on localhost://4000
That's it about it.
Now ,we can talk to each other using socket.io beautiful library.