JavaScript allows working with classes to implement the object-oriented programming (OOP) paradigm. In this chapter, we will delve into the use of classes, properties, methods, and design patterns in JavaScript.

concepts in OOP

Classes in JavaScript

Classes in JavaScript are a clearer way to define objects and methods. The keyword class allows us to define a class structure, and the constructor method initializes its properties.

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Static Methods

Static methods belong to the class itself, not to its instances, and are defined with the static keyword.

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Private Properties and Methods

In JavaScript, properties and methods can be declared private using the # prefix, limiting access only within the class.

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Class Inheritance

Inheritance allows a class to extend another, reusing properties and methods. The extends keyword creates a child class based on a parent class.

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Method Overloading

JavaScript allows redefining methods in a child class, overriding the method implementation in the parent class.

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Polymorphism

Polymorphism allows treating different objects that share a common method similarly, allowing each object to execute its own version of the method.

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Design Patterns in Classes

Singleton

The Singleton pattern ensures that only one instance of a class exists.

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Factory

The Factory pattern provides a way to create instances of classes without specifying the exact class to create.

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Conclusion

Classes and object-oriented programming in JavaScript allow for a clearer and more organized code structure, facilitating the reuse and implementation of advanced patterns. With private properties, inheritance, and design patterns, you can build robust and scalable applications.