Initial data commit

Task/Classes/JavaScript/classes-1.js

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+//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));
+}

Task/Classes/JavaScript/classes-2.js

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+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);