Real-time Chat App – 5 Register User
In this tutorial, we will learn how to create a real-time chat app where users can register and start chatting with each other. We will use React for the front-end, Node.js for the back-end, and Socket.io for real-time communication.
Step 1: Setting up the back-end
First, let’s set up the back-end using Node.js. We will create an express server to handle the user registration and authentication.
const express = require('express');
const app = express();
const http = require('http').Server(app);
const io = require('socket.io')(http);
// handle user registration
app.post('/register', (req, res) => {
// add code to handle user registration
});
// start the server
const port = 3001;
http.listen(port, () => {
console.log('Server is running on port ' + port);
});
Step 2: Creating the front-end
Now, let’s create the front-end using React. We will have a simple form for users to register and start chatting.
import React, { useState } from 'react';
function RegisterUser() {
const [username, setUsername] = useState('');
const [password, setPassword] = useState('');
const handleRegister = () => {
// add code to handle user registration
};
return (
setPassword(e.target.value)} placeholder="Password" />
);
}
Step 3: Real-time communication using Socket.io
Finally, let’s use Socket.io to enable real-time communication between users. We will create a chat room where users can send and receive messages instantly.
io.on('connection', (socket) => {
console.log('a user connected');
socket.on('message', (msg) => {
io.emit('message', msg);
});
socket.on('disconnect', () => {
console.log('user disconnected');
});
});
Conclusion
By following these steps, you can create a real-time chat app with user registration using React, Node.js, and Socket.io. This will enable users to register, join chat rooms, and communicate with each other in real-time.
Also its unable to read the "PostRequest" function.
Hi Chaoo Im getting an unexpected error["Unexpected token 'A', "All fields"… is not valid JSON"]
after sending an http request to the server
great job. Thank you very much