Classes in ES6

class Car {
    // a constructor is a method which runs when the class is instantiated
    // constructors are used to define default properties a newly created object should have
    constructor(make, model, color) {
        this.make = make
        this.model = model
        this.color = color
    }

    // to create a method, we define it in the class. 
    vroom() {
        console.log(`${this.model}'s go vrooooom`)
    }
}

let car1 = new Car("Nissan", "Pulsar", "Silver")

console.log(car1.model)
"Pulsar"

car1.vroom()
"Pulsar's go vrooooom"

class ElectricCar extends Car {
    constructor(make, model, color, batterykWh) {
    // to inherit properties we need to use the super() function
    super(name, model, color); 
    this.batteryPower = batterykWh; 
    }

    horsePowerHour() {
        return this.batteryPower * 1.3428
    }
}

let car2 = new ElectricCar("Tesla","S","Black",81)

car2.horsePowerHour()
"108.7668"