1.open terminal. 2.write "npm init" in terminal. 3.press "enter" until see "Is this OK? (yes)" . 4.write "npm i socket.io" in terminal. 5.write "npm i --save-dev nodemon in terminal.
1.open terminal 2.write "npm run devStart" 3.open LiveServer (if you are using visual studio code) 4.open any browser and enter your ipv4 address and LiveServer port.and append "/main.html" (ex: localhost:5500/main.html)(if not work write your ipv4 instead of localhost. 5.Done !
P.S. All codes of program is not belongs to me. I just take the template of this code from github.com/WebDevSimplified. And implemented.