JavaScript provides robust support for OOP through its prototypes, ES6 classes, and modern enhancements.In JavaScript, an object is a collection of key-value pairs.Classes are the blueprints for creating objects and encapsulate data and behavior.Encapsulation bundles data and methods together while restricting direct access to some components.JavaScript uses public, private, and protected members to achieve encapsulation.Inheritance allows one class to inherit properties and methods from another class.Polymorphism enables overriding methods from parent to subclass to provide a specific implementation.Abstraction allows you to expose only essential details while hiding implementation complexities.JavaScript's prototype-based language allows every object to have an internal link to another object called its prototype.Object composition is an alternative to inheritance, which helps avoid the complexities of deep inheritance hierarchies.