What is Express Js ?

Express.js is a popular web application framework for Node.js, offering a minimalist and flexible approach to building web applications and APIs. It simplifies routing, middleware handling, and static file serving while providing support for various templating engines. Express.js is known for its simplicity and efficiency, allowing developers to quickly create scalable and robust server-side applications. It has a large and active community, which contributes to its widespread use and extensive ecosystem of modules and packages available through npm.

Node Js Syllabus

1. Introduction to Express.js:

   • Overview of Express.js and its role in web application development.
   • Understanding the basic concepts of routes, middleware, and handlers.



2. Routing in Express.js:

   • Defining routes for handling different HTTP methods and URLs.
   • Route parameters and query parameters.



3. Middleware in Express.js:

   • Creating and using middleware functions for various purposes (logging, authentication, etc.).
   • Chaining multiple middleware functions.



4. Templating Engines with Express.js:

   • Integrating and using templating engines (e.g., EJS, Pug) to dynamically render HTML pages.



5. Handling Static Files:

   • Serving static files (CSS, JavaScript, images) with Express.js.



6. Error Handling:

   • Implementing error handling mechanisms to handle exceptions and errors gracefully.



7. RESTful API Development:

   • Building RESTful APIs using Express.js to handle CRUD operations.
   • Handling request and response formats (JSON, XML, etc.).



8. Authentication and Authorization:

   • Implementing user authentication and authorization using middleware and libraries.

9. Database Integration:

   • Connecting Express.js applications to databases (e.g., MongoDB, MySQL).
   • Performing CRUD operations with databases.



10. Sessions and Cookies:

    • Managing user sessions and cookies in Express.js applications.



11. Express.js Best Practices:

    • Learning industry best practices for organizing and structuring Express.js applications.
    • Performance optimization techniques.



12. Deployment and Security:

    • Deploying Express.js applications to servers or cloud platforms.
    • Understanding and implementing security measures to protect the application.