javascript: Prototype Pattern

//Prototype Pattern
function Animal(name) {
    this.name = name
}

Animal.prototype.say = function() {
    console.log(`I am ${this.name}`)
}

function Rabbit(name) {
    Animal.call(this, name)
}

Rabbit.prototype = Object.create(Animal.prototype)

Rabbit.prototype.skip = function() {
    console.log(this.name + ': I skip')
}

let r1 = new Rabbit('r1')

r1.say()
r1.skip()