1function Animal (name, energy) {
2  this.name = name
3  this.energy = energy
4}
5
6Animal.prototype.eat = function (amount) {
7  console.log(`${this.name} is eating.`)
8  this.energy += amount
9}
10
11Animal.prototype.sleep = function (length) {
12  console.log(`${this.name} is sleeping.`)
13  this.energy += length
14}
15
16Animal.prototype.play = function (length) {
17  console.log(`${this.name} is playing.`)
18  this.energy -= length
19}
20
21function Dog (name, energy, breed) {
22  Animal.call(this, name, energy)
23
24  this.breed = breed
25}
26
27Dog.prototype = Object.create(Animal.prototype)
28
29Dog.prototype.bark = function () {
30  console.log('Woof Woof!')
31  this.energy -= .1
32}
33
34const charlie = new Dog('Charlie', 10, 'Goldendoodle')
35console.log(charlie.constructor)

1function Person(first, last, age, gender, interests) {
2  this.name = {
3    first,
4    last
5  };
6  this.age = age;
7  this.gender = gender;
8  this.interests = interests;
9};
10
11function Teacher(first, last, age, gender, interests, subject) {
12  Person.call(this, first, last, age, gender, interests);
13
14  this.subject = subject;
15}

1class childClass extends parentClass
2{
3  
4}

1function Teacher(first, last, age, gender, interests, subject) {
2  Person.call(this, first, last, age, gender, interests);
3
4  this.subject = subject;
5}