Question

Complete this javascript question according to the instructions
given in the comments.

*** DO NOT CHANGE any of the code that you are not instructed to. */

////////////////////
// Hint: If you see a console.log() in my examples, it is
// likely a "return" goes there in your assignment.
///////////////////

// 1) Define a "Vehicle" class that has a "wheels" property equal to 4 in
// the constructor and a method named "rolling" that returns a string
// equal to "Rolling down the highway on {wheels value} wheels."
// Use the class to instantiate a new object named myRide.

// Define a "Car" subclass based on the parent class "Vehicle".
// The "Car" class should also accept a parameter "carDoors". The
// "Car" class should have a "doors" property that is set to the
// value of the "carDoors" parameter. Add a method named "doorsAndWheels"
// that returns a string equal to "My car has {doors value} doors and
// {wheels value} wheels."
// Use the "Car" class to instantiate a new object named myCruiser.

// Define a "Pie" class with the properties "flavor" and "slices".
// Set the "flavor" property equal to a parameter named "pieFlavor".
// Set the "slices" property equal to 8. Add a "getSlices" method
// and a "setSlices" method that function as expected.
// Use the "Pie" class to instantiate a new object named myDessert

// Define a Factory Function named "iceCreamFactory" that
// accepts a "iceCreamFlavor" parameter.
// The function will create an object that has a "flavor"
// property which is private. Set the "flavor" property
// value to the parameter "iceCreamFlavor" value.
// The function should also add a public "cone" property
// that has the value "waffle".
/////////////////////
// The factory function should add a method to the object
// it creates called "serve" that returns a string:
// "Here's your { flavor } ice cream in a { cone } cone."
///////////////////
// Hint: Look at this week's image for Factory Functions
////////
// Use iceCreamFactory to instantiate an object named myScoop.

// Using a literal (not a class or function), define an object
// named "webDev" that has the following key-value pairs:
// foundation: "html", design: "css", logic: "javascript",
// build: function(){return "building..."}
// Convert the "webDev" object to JSON, and save the converted
// data in a variable named sendJSON.
// Now convert the sendJSON data back to an object
// named receiveJSON.

Answer 1

Javascript:

class Vehicle {
  constructor(wheels) {
    this.wheels = new Number(wheels);
  }
  rolling() {
    return new String("Rolling down the highway on " + this.wheels + " wheels");
  }
}
let myRide = new Vehicle(4);
//document.write(myRide.rolling());
//console.log(myRide.rolling());

class Car extends Vehicle {
  constructor(carwheels, carDoors) {
    super(carwheels);
    this.carDoors = new Number(carDoors);
    
  }
  doorsAndWheels() {
    return new String("My car has " + this.carDoors + " and " + 
this.wheels +" wheels");
  }
}
let myCruiser = new Car(4,4);
//document.write(myCruiser.doorsAndWheels());
//console.log(myCruiser.doorsAndWheels());

class Pie {
    constructor(flavour, slices) {
    this.flavor = new String(flavour);
    this.slices = new Number(slices);
  }  
  setFlavor(flavor) {
    this.flavor = new String(flavor);
  }
  getFlavor() {
    return this.flavor;
  }
  setSlices(slices) {
    this.slices = new Number(slices);
  }  
  getSlices() {
    return this.slices;
  }
}
let myDessert = new Pie("pieFlavor",8);
myDessert.setFlavor("pieFlavor");
myDessert.setSlices(8);

class IceCream {
  cone = "waffle"
  constructor(flavour) {
        this.flavor = new String(flavour);
  }
  serve() {
    return new String("Here's your "+  this.flavor + " ice cream in a " + this.cone + " cone.");
  }
} 
function iceCreamFactory (iceCreamFlavor) {
        let myDessert = new IceCream(iceCreamFlavor);
        return myDessert;
};

Json Conversion

let webDev = {
 foundation: "html",
 design: "css", 
 logic: "javascript",
 build: function(){return "building..."}
}
let sendJSON = JSON.stringify(webDev);
let receiveJSON = JSON.parse(sendJSON);