Advanced JavaScript Examples

This repository demonstrates core JavaScript concepts with practical examples:

1. Lexical Scope & Closure

   • Functions can access variables from their parent scope.
   • Closures allow a function to "remember" these variables even after the parent scope is gone.

2. IIFE (Immediately Invoked Function Expression)

   • Functions that run immediately after being defined.
   • Useful for creating private variables and avoiding global scope pollution.

3. Closure with Parameters

   • Demonstrates how closures can manage dynamic values (like credits, counters, API limits).
   • Useful for state management and resource control.

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🔥 New Topics Added

4. Prototype Inheritance (prototype-inheritance.js)

   • Demonstrates how objects can inherit properties and methods from other objects using Object.setPrototypeOf.
   • Explains the differences between __proto__ and modern methods like getPrototypeOf and setPrototypeOf.
   • Shows how multiple objects can form a prototype chain.

5. Getters & Setters (getters-setters.js)

   • Shows how to use get and set for encapsulating object properties.
   • Demonstrates property overriding and prototype chain behavior.
   • Compares Object.keys() vs for...in when iterating over properties.

6. Object Constructors (object-constructors.js)

   • Uses constructor functions to create reusable object blueprints.
   • Adds shared methods via prototype to optimize memory usage.
   • Explains how instances access properties/methods through the prototype chain.

7. ES6 Classes & Inheritance (classes-inheritance.js)

   • Demonstrates modern class-based syntax for inheritance.
   • Uses extends and super() to inherit properties and methods.
   • Compares class inheritance with traditional prototype-based inheritance.

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📚 Further Reading

• MDN Web Docs – Prototypes
• JavaScript.info – Prototypal Inheritance
• MDN Web Docs – Classes

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