Prototypes In JavaScript

Prototypes in JavaScript are a fundamental concept that relates to how objects and functions interact with each other. Every object in JavaScript has a prototype, which can pass on properties and methods to other objects. This mechanism allows objects to share features and methods present in their prototype.

Prototype Chain: A key feature of prototypes is the prototype chain. When you try to access a property, JavaScript first looks for it on the current object. If it's not found, the search continues up the object's prototype, and this process goes on until the property is found or the end of the prototype chain is reached.

To add or modify methods and properties on a prototype, you can use the prototype property on constructor functions. This way, all objects created by that constructor function can access the added features and methods.

For example, if we want to add a new method to all objects created by the Person constructor function, we can do it like this:

In this example, the fullName method is added to the Person prototype, so every new object created using new Person will have access to this method.

Prototypes in JavaScript are powerful and provide a way for different objects to share properties and methods, which helps in writing efficient and effective code.

Thank you for your support and cooperation.