Express Framework

Express is a minimal and unopinionated web application framework for Node.js, serving as the de facto standard for building backend services and APIs. It provides a thin layer of fundamental web application features, simplifying tasks like routing HTTP requests to specific handler functions and managing the request-response cycle. The framework's power lies in its middleware architecture, which allows developers to sequentially execute functions for tasks such as parsing data, authenticating users, and handling errors, offering a flexible and powerful foundation for any server-side project.

1. Introduction to Express.js
   1. What is Express.js
      1. Definition and Purpose
      2. Web Application Framework
      3. Server-Side JavaScript Framework
   2. History and Evolution
      1. Origins and Development
      2. Version History
      3. Current Status
   3. Express.js and Node.js
      1. Built on Node.js Runtime
      2. Relationship with Node.js Core Modules
      3. HTTP Module Enhancement
   4. Framework Philosophy
      1. Minimalist Design
      2. Unopinionated Architecture
      3. Flexibility and Extensibility
   5. Comparison with Other Frameworks
      1. Koa.js
      2. Fastify
      3. Hapi.js
      4. NestJS
   6. Benefits of Using Express.js
      1. Rapid Development
      2. Large Community
      3. Extensive Middleware Ecosystem
      4. Industry Standard
      5. Learning Curve
   7. Core Features Overview
      1. Routing System
      2. Middleware Architecture
      3. Template Engine Support
      4. Static File Serving
      5. Error Handling
      6. Request and Response Objects