Complete Express.js Tutorial: From Basics to Advanced Concepts

When it comes to building powerful web applications and APIs, Express.js is one of the most widely used frameworks in the Node.js ecosystem. Known for its simplicity, flexibility, and speed, Express.js helps developers create scalable applications with minimal effort. If you’ve just started learning backend development or want to level up your Node.js skills, this guide is for you. In this complete Express.js tutorial, we’ll explore everything from the basics to advanced concepts. By the end, you’ll not only understand what Express.js is but also know how to build real-world applications with it. What is Express.js? Express.js, often simply called Express , is a lightweight and fast web application framework for Node.js . It provides a robust set of features for building web and mobile applications, such as: Handling HTTP requests and responses. Creating RESTful APIs. Simplifying routing and middleware integration. Supporting templating engines. Without Express...