How do I implement prototypal inheritance in JavaScript?

How do I implement prototypal inheritance in JavaScript?

Prototypal inheritance allows objects to inherit properties and methods from other objects. You can implement it using the Object.create() method.

Can you give me an example of how to use Object.create()?

Sure! Here's a simple example:

const animal = { 
  speak() { console.log('Animal speaks'); } 
};

const dog = Object.create(animal);

dog.speak(); // Output: Animal speaks

What if I want to add more properties to the dog object?

You can add properties directly to the dog object like this:

dog.breed = 'Labrador';
console.log(dog.breed); // Output: Labrador

Is there a way to set up a constructor function for this?

Yes! You can create a constructor function and use Object.create() within it to set up inheritance. Here's an example:

function Dog(name) {
  const dog = Object.create(animal);
  dog.name = name;
  return dog;
}

const myDog = Dog('Buddy');
myDog.speak(); // Output: Animal speaks