Express.js is a popular web application framework for Node.js. It is designed to make the development of web applications and APIs easier and faster. Here are some of the benefits of using Express.js:

1. Fast and lightweight: Express.js is fast and lightweight, making it an ideal choice for creating web applications and APIs.

2. Easy to use: Express.js is easy to use and understand, making it a great choice for beginners.

3. Flexible routing: Express.js provides a flexible routing system that allows developers to easily create routes for their applications.

4. Robust features: Express.js comes with a variety of features, such as template engines, sessions, and middleware, which make it a powerful and robust framework.

5. Extensibility: Express.js is highly extensible, allowing developers to easily add additional features.


Let’s say you want to create a simple web application with Express.js. First, you would need to install Express.js. Then, you would create a main file, which would contain the code for your application. You would then create routes for your application, which would specify how the application should respond to different requests. Finally, you would create a template engine, which would render the HTML for your application. With Express.js, this process is simple and straightforward.

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