Express.js Tutorial Improve Improve Improve Like Article Like Save Article Save Share Report issue Report Express JS is a small framework that works on top of Node web server functionality to simplify its APIs and add helpful new features. It makes it easier to organize your application’s functionality with middleware and routing. It adds helpful utilities to Node HTTP objects and facilitates the rendering of dynamic HTTP objects. Why learn Express ? Express makes the development of Node application very easy and it is very simple to use. It provides a simple and efficient way to build web applications and APIs using JavaScript. It helps Node to handling routes, requests, and responses, making it easier for you to create robust and scalable applications. As it is very flexible, lightweight and easy to learn and contains a ton of middleware option making it an excellent choice to learn and use Express in your application. Express Advantages: Simplicity and Minimalism: Express JS has very simple design, that makes it easy to learn and use. With its simple structure you can quickly set up a server, define routes, and handle HTTP requests which makes it an excellent choice for building web applications efficiently. Flexibility and Customization: Express JS is a flexible framework that allows you to structure the application based on your preferences. It does have a strict application architecture so you can organize your code according to your preference. Middleware Ecosystem: Express JS has a large numbers of middleware that can be easily integrated into applications. Middleware functions increases the functionality of Express by allowing you to handle various tasks such as authentication, logging, and error handling. Scalability: Express JS is designed to be lightweight and scalable, which makes it suitable for building both small projects and large-scale applications. It is asynchronous and has event-driven architecture which allows you to handle a large number of requests. Active Community Support: Express JS has a large active community who contribute to its growth and improvement. Because of them the framework is regularly updated and well-documented. Express Basic Concepts: Introduction to Express Steps to create Express Application Design first Application using Express How to Structure my Application in Express JS Unique features of Express How to send response from server to client using Node and Express ? Why Express ‘app’ and ‘server’ files kept separately ? How to implement JWT authentication in Express app How to expire session after 1 min of inactivity in express-session of Express JS Express Error Handling Express Functions: Express express(): express.json() Function express.raw() Function express.Router() Function express.static() Function express.text() Function express.urlencoded() Function express() function Complete Reference Express Applications Function: app.locals Property app.mountpath Property Mount Event app.all() Function app.delete() Function app.disable() Function app.disabled() Function app.enable() Function app.enabled() Function Application Complete Reference Express Requests Function: req.app Property req.baseUrl Property req.body Property req.cookies Property req.fresh Property req.accepts() Function req.acceptsCharsets() Function req.acceptsEncodings() Function req.acceptsLanguages() Function Request Complete Reference Express Response Function: res.app Property res.headersSent Property res.locals Property res.append() Function res.attachment() Function res.cookie() Function res.clearCookie() Function res.download() Function res.end() Function Response Complete Reference Express Router Function: router.all() Function router.METHOD() Function router.param() function router.route() Function router.use() Function Router Complete Reference Express Advanced Topics: Node vs Express Middlewares in Express How to update record in Cassandra using Express What is the use of next() function in Express JS How to create custom middleware in express Why Express is used in Web Development What is Express Generator Express HTTP methods How to create routes using Express and Postman? Why Express Is Used For Enterprise App Development REST API using the Express to perform CRUD What is express-session middleware in Express More on Express: If you are preparing for the interviews, please read the Top 50 Express JS Interview Questions and Answers For more article, read the recently published article’s on Express: Recent Articles on Express Last Updated : 05 Feb, 2024 Like Article Save Article Next Top 50 Express.js Interview Questions and Answers Share your thoughts in the comments Add Your Comment Please Login to comment...