Step by Step solution about How to resolve the algorithm Classes step by step in the JavaScript programming language

In the first part of the code, a constructor function called Car is defined. It takes two parameters: brand and weight. The brand parameter is assigned to the property this.brand and the weight parameter is assigned to the property this.weight. If the weight parameter is not provided, it will default to 1000.

The Car constructor function also has a method called getPrice that returns the value of the this.price property.

The second part of the code defines a constructor function called Truck. The Truck constructor function takes two parameters: brand and size. The brand parameter is assigned to the this.brand property and the size parameter is assigned to the this.size property.

The Truck constructor function also has a method called getPrice that returns the value of the this.price property.

In the third part of the code, two instances of the Car constructor function are created and stored in an array called cars.

The first instance of the Car constructor function is created with the brand "Mazda". The second instance of the Car constructor function is created with the brand "Volvo" and the size 2.

In the fourth part of the code, a loop is used to iterate over the cars array and print the brand, weight, and size properties of each car. It also prints whether each car is an instance of the Car constructor function and whether each car is an instance of the Truck constructor function.

In the fifth part of the code, a class called Car is defined. The Car class has four properties: weight, brand, price, and brands. The weight property is assigned a default value of 1000. The brands property is an array of strings that contains a few brands of cars.

The Car class also has a constructor function that takes two parameters: brand and weight. The brand parameter is assigned to the this.brand property and the weight parameter is assigned to the this.weight property. If the brand parameter is not provided, it will default to null. If the weight parameter is not provided, it will default to 1000.

The Car class also has a method called drive that takes one parameter: distance. The drive method logs a string to the console that includes the brand, the name of the class, and the distance that the car drove.

The Car class also has a getter called formattedStats that returns a formatted string that includes the type of car, the brand, the weight, and the size (if it exists).

In the sixth part of the code, a class called Truck is defined. The Truck class extends the Car class. The Truck class has one additional property: size.

The Truck class also has a constructor function that takes two parameters: brand and size. The brand parameter is assigned to the this.brand property and the size parameter is assigned to the this.size property. If the brand parameter is not provided, it will default to null. If the size parameter is not provided, it will default to null.

In the seventh part of the code, an instance of the Truck class is created and stored in the variable myTruck. The myTruck instance is created with the brand "Volvo" and the size 2.

In the eighth part of the code, the formattedStats property of the myTruck instance is logged to the console. The formattedStats property returns a formatted string that includes the type of car, the brand, the weight, and the size.

In the ninth part of the code, the drive method of the myTruck instance is called with the argument 40. The drive method logs a string to the console that includes the brand, the name of the class, and the distance that the car drove.

//Constructor function.
function Car(brand, weight) {
  this.brand = brand;
  this.weight = weight || 1000; // Resort to default value (with 'or' notation).
}
Car.prototype.getPrice = function() { // Method of Car.
  return this.price;
}

function Truck(brand, size) {
  this.car = Car;
  this.car(brand, 2000); // Call another function, modifying the "this" object (e.g. "superconstructor".)
  this.size = size; // Custom property for just this object.
}
Truck.prototype = Car.prototype; // Also "import" the prototype from Car.

var cars = [ // Some example car objects.
  new Car("Mazda"),
  new Truck("Volvo", 2)
];
for (var i=0; i<cars.length; i++) {
  alert(cars[i].brand + " " + cars[i].weight + " " + cars[i].size + ", " +
      (cars[i] instanceof Car) + " " + (cars[i] instanceof Truck));
}


class Car {
  /**
   * A few brands of cars
   * @type {string[]}
   */
  static brands = ['Mazda', 'Volvo'];

  /**
   * Weight of car
   * @type {number}
   */
  weight = 1000;

  /**
   * Brand of car
   * @type {string}
   */
  brand;

  /**
   * Price of car
   * @type {number}
   */
  price;

  /**
   * @param {string} brand - car brand
   * @param {number} weight - mass of car
   */
  constructor(brand, weight) {
    if (brand) this.brand = brand;
    if (weight) this.weight = weight
  }

  /**
   * Drive
   * @param distance - distance to drive
   */
  drive(distance = 10) {
    console.log(`A ${this.brand} ${this.constructor.name} drove ${distance}cm`);
  }

  /**
   * Formatted stats string
   */
  get formattedStats() {
    let out =
      `Type: ${this.constructor.name.toLowerCase()}`
      + `\nBrand: ${this.brand}`
      + `\nWeight: ${this.weight}`;

    if (this.size) out += `\nSize: ${this.size}`;

    return out
  }
}

class Truck extends Car {
  /**
   * Size of truck
   * @type {number}
   */
  size;

  /**
   * @param {string} brand - car brand
   * @param {number} size - size of car
   */
  constructor(brand, size) {
    super(brand, 2000);
    if (size) this.size = size;
  }
}

let myTruck = new Truck('Volvo', 2);
console.log(myTruck.formattedStats);
myTruck.drive(40);