Lesson 5.3: JavaScript Classes & Objects – Object-Oriented Programming
JavaScript supports Object-Oriented Programming (OOP), allowing developers to create reusable and modular code using objects and classes.
1. What are Objects?
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Objects store related data and functionality together.
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They consist of properties (data) and methods (functions).
2. Creating Classes
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Classes are blueprints for objects, introduced in ES6.
3. Inheritance
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Allows one class to inherit properties and methods of another class.
4. Encapsulation
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Keep object data private using closures or
#private fields (ES2022+).
5. Practical Uses
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Model real-world entities (students, products, users).
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Organize code logically and modularly.
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Essential for large-scale applications and frameworks.
✅ Summary:
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Objects store data and functions together.
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Classes are blueprints for creating multiple objects.
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Inheritance enables code reuse.
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Encapsulation keeps data safe.
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Using classes and objects is key for modern JavaScript development.
