What is a prototype in JavaScript?

Can you explain what a prototype is in JavaScript?

Sure! In JavaScript, a prototype is an object from which other objects inherit properties. It's a fundamental concept for understanding how inheritance works in JavaScript.

How does the prototype chain work?

The prototype chain is a series of links between objects. When you try to access a property of an object, JavaScript first checks the object itself, and if it doesn't find it, it looks up the chain to the object's prototype, and so on, until it reaches the end of the chain.

Can you give me an example of using prototypes?

Absolutely! For instance, if you have a constructor function Person, you can add methods to its prototype like this: Person.prototype.sayHello = function() { console.log('Hello!'); }; Now all instances of Person can use sayHello.

What are the benefits of using prototypes?

Using prototypes allows for memory efficiency since methods are shared among all instances. It also enables a clear structure for inheritance.