Build Chat Application With Using Node Js Express


In this tutorial, we will be using HarperDB to build a full-stack, real-time chat App with chat rooms.

I hope that this project will be very helpful in learning how to put together full-stack apps, and how to create an application where the back-end can transmit with the front-end in real-time.

Here is an example of building a chat application using, Node.js, and Express:

1- First, install the necessary packages by running the following command in your terminal:

npm install express

2- Create a new Node.js project and set up Express:

const express = require('express');
const app = express();
const server = app.listen(3000);

3- Integrate with your Express server:

const io = require('')(server);

4- Set up event listeners for incoming socket connections and messages:

io.on('connection', socket => {
  socket.on('new-message', message => {
    io.emit('new-message', message);

5- In your HTML file, include the client library and create a connection to the server:

<script src="/"></script>
  const socket = io();

6-In your JavaScript, add event listeners to listen for new messages and to send messages:

socket.on('new-message', message => {
  // Add code to display the message in the chat

// Function to send a message
function sendMessage() {
  socket.emit('new-message', message);

  1. Finally, you can add the functionality to your website that allows users to send messages.
  2. You can use the above example as a starting point and customize it to suit your needs. You can also refer to the documentation for more information and additional features.

To build a Blog, You can use a framework like express-generator, This will help you to generate the basic structure for a blog using Express.js.

You can use a database like MongoDB to store your posts and comments and use Mongoose library to connect to MongoDB.

You can also use a library like Passport for user authentication and authorization.

You can refer to the documentation of those libraries to get more information and advanced features.

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