Express JS

Express.js is a fast, unopinionated, and minimal web application framework for  “Node.js”. It simplifies the process of building web applications and APIs by providing essential features like routing, middleware support, and template engines.

-Key Features of Express.js:
1. Routing:
  - Express provides a powerful and flexible routing system, allowing developers to define various HTTP request routes (like GET, POST, PUT, DELETE) easily.

2. Middleware Support:
  - Express supports middleware, which are functions that can modify requests, responses, or execute additional code before reaching the final route handler. This makes it easy to add functionality like logging, authentication, and error handling.

3. Simplified Request Handling:
  - Express simplifies handling HTTP requests and responses, making it easier to work with data, manage sessions, and implement features like cookies.

4. Template Engines:
  - Express supports various template engines (like **EJS**, **Pug**, and **Handlebars**), allowing developers to render dynamic HTML pages.

5. Scalability:
  - Express is lightweight and unopinionated, which means developers can scale the application as needed by adding only the features they require.

6. Community and Ecosystem:
  - Express has a large and active community, with many plugins, middleware, and extensions available to help developers.

Why Use Express.js?
- Fast and Lightweight: Express makes it easy to build simple, high-performance web applications and APIs quickly.
- Flexible: Express provides a minimal framework, allowing developers to use only the tools they need.
- Easy to Learn: Express has a simple API, making it beginner-friendly for those familiar with JavaScript and Node.js.
- Middleware: The middleware feature gives developers the flexibility to extend their applications with functionality like logging, authentication, and more.