carClass.js

function Car(make, model, carColor){
this.make = make;
this.model = model;
this.carColor = carColor;

alert("Smell That New Car Smell!");
}
Car.prototype.make = 'Car Make';
Car.prototype.model = 'Car Model';
Car.prototype.carColor = 'Car Color';
Car.prototype.goFast() = function {
alert('Let\'s go fast in my ' + this.make + ' ' + this.model);
}

var myCar = new Car('Ford','Mustang','Red');
myCar.goFast();

carClass_constructor.js

function Car(make, model, carColor){
this.make = make;
this.model = model;
this.carColor = carColor;

alert("Smell That New Car Smell!");
}

carClass_define_car.js

var myCar = new Car('Ford','Mustang','Red');

carClass_prototype.js

Car.prototype.make = 'Car Make';
Car.prototype.model = 'Car Model';
Car.prototype.carColor = 'Car Color';