Author: Yeasin Arafat
Email: yeasinoncode98@gmail.com
GitHub: Yeasinoncode98
This is a simple Express.js project demonstrating the basics of setting up a web server, routing, and handling APIs. Express.js is a minimal and flexible Node.js web application framework.
- Lightweight and fast server setup
- Routing for GET and POST requests
- Middleware support
- Easy integration with databases (optional)
- Node.js installed (v14 or above recommended)
- npm or yarn package manager
- Clone the repository
git clone https://github.com/Yeasinoncode98/your-repo-name.git
cd your-repo-name
2.Initialize Node.js project (if not already)
npm init -y
3.Install Express
npm install express
................................
1.Create an entry file (if not already present):
index.js
2.Basic Express server example (index.js):
const express = require('express');
const app = express();
const PORT = 3000;
// Middleware
app.use(express.json());
// Routes
app.get('/', (req, res) => {
res.send('Hello, Express.js!');
});
app.post('/data', (req, res) => {
const userData = req.body;
res.send({ message: 'Data received successfully', data: userData });
});
// Start server
app.listen(PORT, () => {
console.log(`Server running at http://localhost:${PORT}`);
});
3.Start the server
node index.js
4.Test the server
1.Open browser: http://localhost:3000
2.Use Postman or curl to test POST requests to /data
Note --> Use Nodemon and cors
NodeMon Npm --> npm install -g nodemon
cors Npm -->npm install cors
..............................
Common Commands -->
Command Description ------->
npm install Install project dependencies
node index.js Start the server
npm run dev Start server with nodemon (if installed)
npm init -y Initialize a new Node.js project
.......................................
Folder Structure (Recommended)
your-repo-name/
│
├── index.js # Entry point
├── package.json
├── package-lock.json
├── routes/ # Optional: separate routes
├── controllers/ # Optional: route handlers
└── README.md
..............................
Notes -->
Always use express.json() middleware for parsing JSON in POST requests.
For development, you can install nodemon for auto-restart:
npm install -g nodemon
nodemon index.js
....................................
License
This project is open-source and free to use.
Happy coding! 🚀