Node.js is a powerful JavaScript runtime built on Chrome's V8 engine. It enables developers to run JavaScript outside the browser, making it ideal for building fast, scalable server-side and networking applications.
npm init
npm init creates a package.json file, which stores project metadata, dependencies, and scripts.
npm init - Interactive setup
npm init -y - Default setup (skips prompts)
Minimal and flexible Node.js web application framework.
npm install express
Starter code:
const express = require('express');
const app = express();
const PORT = process.env.PORT || 3000;
app.get('/', (req, res) => {
res.send('Hello, World!');
});
app.listen(PORT, () => {
console.log(`Server is running on http://localhost:${PORT}`);
});
Elegant MongoDB object modeling for Node.js.
npm install mongoose
Sample usage:
const mongoose = require('mongoose');
mongoose.connect('mongodb://localhost:27017/mydb')
.then(() => console.log('Connected to MongoDB'))
.catch(err => console.error(err));
node index.js (or your main file).