advanced#Node.js#Socket.io
Creating a Real-Time Chat Application with Node.js and Socket.io
Learn how to create a real-time chat application using Node.js and Socket.io.
Introduction to Socket.io
Socket.io is a JavaScript library that allows you to create real-time applications. It provides a simple way to establish WebSocket connections between clients and servers.
Step 1: Install Socket.io
Install Socket.io using npm.
npm install socket.io
Step 2: Create a New Express App
Create a new Express app.
const express = require('express');
const app = express();
Step 3: Create a Socket.io Server
Create a Socket.io server.
const server = require('http').createServer(app);
const io = require('socket.io')(server);
Step 4: Handle Socket.io Events
Handle Socket.io events, such as connection and disconnect.
io.on('connection', (socket) => {
console.log('Client connected');
socket.on('disconnect', () => {
console.log('Client disconnected');
});
});
Step 5: Broadcast Messages
Broadcast messages to all connected clients.
socket.on('message', (message) => {
io.emit('message', message);
});
Run the code to see the real-time chat application in action.