Polymorphism is a concept in object-oriented programming that allows objects of different types to be treated as objects of a common type. This allows for more flexible and reusable code and a more intuitive way of thinking about objects and their interactions.
Overview
In JavaScript, polymorphism is implemented through the use of prototypes and prototypal inheritance. Every object in JavaScript has a prototype, which is another object that it inherits properties and methods from. This allows for the creation of a chain of prototypes, where an object can inherit from another object, which in turn inherits from another object, and so on.