REST APIs with Node.js

Introduction

Example

1/* this sends a JSON API response */
2app.get('/api/cars', (req, res) => {
3  const cars = [{brand: 'Ford'}, {brand: 'BMW'}];
4  res.json(cars);
5});

Key Points

• REST APIs communicate using JSON.
• Frontend apps fetch this data to build the UI.
• APIs use standard HTTP status codes (like 404 for Not Found).
• CRUD operations (Create, Read, Update, Delete) map to HTTP methods.