Create a object type with a constructor function and see 'this' in action

dog.js

function Dog(breed, name, friends){
    this.breed = breed;
    this.name = name;
    this.friends = friends;	
    this.intro = function() {
        console.log(`Hi, my name is ${this.name} and I’m a ${this.breed}`);
        return this;
    }; 
}