Data Abstraction Hacks

Popcorn Hack #1

Create a child class of the class Appliance, and call it’s name() function

%%js 
    class Appliance {
        constructor(toaster) {
            this.toaster = toaster;
        }
        name() {
            return "I am a " + this.constructor.name + " and my model is " + this.toaster;
        }
    }
    // Below this name the class and cause it to inherit from the Appliance class
    class Toaster extends Appliance {
        constructor(toaster) {
            super(toaster);
        }      
}

const myToaster = new Toaster("Toaster 3000");

console.log(myToaster.name());

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Popcorn Hack #2

Create child classes of the product class with items, and add parameters depending on what it is. An example is provided of a bagel.

%%js
    class Product{
        constructor(price,size,taxRate) {
            this.price = price;
            this.size = size;
            this.taxRate = taxRate;
        }   
        getPrice() {
            return this.price + this.taxRate * this.price;
        }
        product(){
            const className = this.constructor.name.toLowerCase();
            return "You are ordering a " + className + " with a price of " + this.getPrice() + " dollars, a size of " + this.size;
        }
    }
    class Bagel extends Product{
        constructor(price, size, taxRate, flavor) {
            super(price, size, taxRate);
            this.flavor = flavor;
        }
        getPrice(){
            return super.getPrice() * this.size;
        }
        product(){
            return super.product() + " and a flavor of " + this.flavor;
        }
    }
    class Juice extends Product{
        constructor(price, size, taxRate, flavor) {
            super(price, size, taxRate);
            this.flavor = flavor;
        }
        getPrice(){
            return super.getPrice() * this.size;
        }
        product(){
            return super.product() + " and a flavor of " + this.flavor;
        }
    }
var sesameBagel = new Bagel(1.5, 2, 0.07, "sesame");
var orangeJuice = new Juice(0.75, 1, 0.10, "orange");
console.log(sesameBagel.product());
console.log(orangeJuice.product());

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