Data Abstraction Hacks
An intro to data abstraction
Popcorn Hack #1
Create a child class of the class Appliance, and call it’s returnName() function
%%js
class Appliance {
constructor(name, model) {
this.name = name;
this.model = model
}
returnName() {
return "I am a " + this.name + " and my model is " + this.model;
}
}
// Below this name the class and cause it to inherit from the Appliance class
class Oven extends Appliance{
constructor(name, model) {
super(name, model);
}
returnName(){
return super.returnName()
}
}
let model1 = new Oven('myoven','samsung a10')
console.log(model1.returnName())
<IPython.core.display.Javascript object>
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();
// Does not use and assuming that more parameteres will be added
return "You are ordering a " + className + " with a price of " + this.getPrice() + " dollars, a size of " + this.size;
}
}
class Donut 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 ChocolateDonut = new Donut(1.5, 2, 0.07, "Chocolate");
console.log(ChocolateDonut.product());
<IPython.core.display.Javascript object>