Node.js Express: API & CLI Apps

Role of Express.js in Web DevelopmentRole of Express.js in Web Development

Express.js is a framework that enhances Node.js for web development, providing many advantages over plain Node.js.


Benefits of using Express.js over plain Node.js


Streamlined Routing

Express.js simplifies the intricate process of routing by allowing developers to define routes for different HTTP methods and URL patterns.

Flexible Middleware

One of Express.js's greatest assets is its middleware system. It enables the injection of modular functions at various stages of the request-response cycle. This flexibility facilitates crucial tasks like authentication, logging, and error handling. As a result, we can design secure and efficient web apps.

Serving Static Files

In addition to its server logic capabilities, Express.js excels at serving static files such as HTML, CSS, and JavaScript. This versatility makes it an ideal choice for the development of full-stack applications.

đź’ˇ Where Express.js Shines

Express.js is the preferred option for a diverse range of web development scenarios, including:

  • Web Applications: Whether it's a basic project or a complex application, Express.js streamlines the development process.
  • API Development: When building RESTful APIs to provide data for web and mobile apps, Express.js is a standout performer.
  • Real-time Applications: By teaming up with WebSocket libraries such as, Express.js can fuel real-time apps like chat apps and online gaming platforms.
  • Microservices Architecture: In microservices-based architectures, Express.js can serve as the bedrock for individual microservices.


A REST API, also called a RESTful API, is a type of application programming interface (API) that adheres to the principles of the REST architectural style. It enables communication with RESTful web services, where 'REST' stands for representational state transfer.

1. What is Express.js primarily used for in web development?
2. Express.js is suitable for which of the following?


What is Express.js primarily used for in web development?

Select the correct answer


Express.js is suitable for which of the following?

Select the correct answer

Everything was clear?

Section 3. Chapter 2