Javascript object constructors

hi having trouble with prototype constructors in javascript also struggle to understand object oriented programming can you explain in the simplest way possible from what i understand classes are prototypes for building objects but i cannot understand what is happening here it is too complex for me can you please explain it

function Animal() { }
function Bird() { }
function Dog() { }

Bird.prototype = Object.create(Animal.prototype);
Dog.prototype = Object.create(Animal.prototype);

// Only change code below this line



let duck = new Bird();
let beagle = new Dog();
duck.prototype.constructor = Bird;
beagle.prototype.constructor = Dog;
returning the following error

// running tests
Bird.prototype should be an instance of Animal.
duck.constructor should return Bird.
Dog.prototype should be an instance of Animal.
beagle.constructor should return Dog.
// tests completed
// console output
TypeError: Cannot set properties of undefined (setting 'constructor')

see code above for reference

This was very hard and challenging for me as well but the main idea here is the word Animal, they listed it as just another function with an object but is that what`s really going on here? Here is more info that dose a better job illustrating this concept.

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The main idea of an Animal function in JavaScript is to create a blueprint for all animals. This blueprint can then be used to create specific animals, such as dogs, cats, and horses. The Animal function will typically have properties such as name, age, and species. It will also have methods such as speak() and eat(). The speak() method will produce a noise that is characteristic of the animal, such as a bark or a meow. The eat() method will consume food that is appropriate for the animal, such as meat or grass.

Here is an example of an Animal function in JavaScript:

function Animal(name, age, species) {
  this.name = name;
  this.age = age;
  this.species = species;
}

Animal.prototype.speak = function() {
  console.log(this.name + " makes a noise.");
};

Animal.prototype.eat = function() {
  console.log(this.name + " eats " + this.species + " food.");
};

Use code with caution.

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This function can then be used to create specific animals, such as a dog, a cat, and a horse.

Here is an example of how to create a dog:

var dog = new Animal("Fido", 3, "dog");

Use code with caution.

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The dog object will have the following properties:

name: Fido, age: 3, species: dog.

The dog object will also have the following methods:

speak(, eat(.

The speak() method will produce a bark.

The eat() method will consume meat.

Here is an example of how to use the speak() and eat() methods:

dog.speak();
// Output: Fido barks.

dog.eat();
// Output: Fido eats dog food.

Use code with caution.

Learn more

The Animal function is a powerful tool that can be used to create a variety of animals. It is a fundamental part of JavaScript and is used by many developers.

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