Object-Oriented JavaScript: Prototypes and Class Inheritance

Writing efficient, scalable JavaScript requires a deep understanding of how the language handles object-oriented programming. If you rely solely on frameworks, you risk missing out on the core mechanics that power every JS application. This course provides a comprehensive roadmap for mastering JavaScript’s unique approach to inheritance and subtyping. You will move beyond simple object literals to design complex, reusable class structures that manage application data effectively, all without relying on external libraries. ### What you'll learn * Understand the core differences between classical and prototype-based inheritance models. * Practice defining constructor functions and manipulating the prototype chain for effective inheritance and delegation. * Master the modern ES6 `class` syntax, including `extends`, `super()`, and working with private fields (`#`). * Apply polymorphism and subtyping principles to create flexible, interchangeable object structures. * Learn to structure data management within class instances using module patterns for encapsulation and state control. The material begins with foundational definitions of objects and prototypes, progresses through hands-on exercises in prototype chaining, and concludes by applying modern ES6 class features to build a complete, hierarchical application model. This course is designed for beginner and intermediate JavaScript developers who want a foundational understanding of the language's object model. No prior experience with classical object-oriented languages is required. Start building truly robust JavaScript applications today.