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  1.  function Hamburger(size, stuffing) {
  2.  
  3.     this.validateSize(size);
  4.     this.validateStuffing(stuffing);
  5.  
  6.     this.size = size;
  7.     this.stuffing = stuffing;
  8.  
  9.     this.toppings = [];
  10.  
  11.     this.pricesAndCalorics = {};
  12.  
  13.     this.pricesAndCalorics[Hamburger.SIZE_BIG] = {price: 100, calories: 40};
  14.     this.pricesAndCalorics[Hamburger.SIZE_SMALL] = {price: 50, calories: 20};
  15.  
  16.     this.pricesAndCalorics[Hamburger.STUFFING_CHEESE] = {price: 10, calories: 20};
  17.     this.pricesAndCalorics[Hamburger.STUFFING_SALAD] = {price: 20, calories: 5};
  18.     this.pricesAndCalorics[Hamburger.STUFFING_POTATOES] = {price: 15, calories: 10};
  19.  
  20.     this.pricesAndCalorics[Hamburger.TOPPING_SAUCE] = {price: 15, calories: 0};
  21.     this.pricesAndCalorics[Hamburger.TOPPING_MAYO] = {price: 20, calories: 5};
  22.  
  23. }
  24.  
  25. Hamburger.SIZE_BIG = "BIG";
  26. Hamburger.SIZE_SMALL = "SMALL";
  27.  
  28. Hamburger.STUFFING_CHEESE = "CHEESE";
  29. Hamburger.STUFFING_SALAD = "SALAD";
  30. Hamburger.STUFFING_POTATOES = "POTATOES";
  31.  
  32. Hamburger.TOPPING_SAUCE = "SAUCE";
  33. Hamburger.TOPPING_MAYO = "MAYO";
  34.  
  35. Hamburger.prototype.validateSize = function (size) {
  36.     if (size != Hamburger.SIZE_BIG && 
  37.         size != Hamburger.SIZE_SMALL) {
  38.         throw new Error( size + " - неправильный размер" );
  39.     }
  40. }
  41.  
  42. Hamburger.prototype.validateStuffing = function (stuffing) {
  43.     if (stuffing != Hamburger.STUFFING_CHEESE && 
  44.         stuffing != Hamburger.STUFFING_SALAD && 
  45.         stuffing != Hamburger.STUFFING_POTATOES) {
  46.         throw new Error( stuffing + " - неправильная начинка" );
  47.     }
  48. }
  49.  
  50. Hamburger.prototype.addTopping = function (topping) {
  51.  
  52.     if (topping != Hamburger.TOPPING_SAUCE && 
  53.         topping != Hamburger.TOPPING_MAYO) {
  54.             throw new Error( topping + " - неизвестная добавка");   
  55.     };  
  56.  
  57.     if (this.toppings.indexOf(topping) >= 0) {
  58.             throw new Error("Одну и ту же добавку нельзя использовать больше одного раза!");
  59.     };   
  60.  
  61.         this.toppings.push(topping);
  62. }
  63.  
  64. Hamburger.prototype.calculateCalories = function () {
  65.  
  66.     var calories = 0;
  67.     var arr = this.pricesAndCalorics;
  68.         calories += arr[this.size].calories;
  69.         calories += arr[this.stuffing].calories;
  70.  
  71.             for (var i = 0; i < this.toppings.length; i++) {
  72.                 calories += arr[this.toppings[i]].calories;
  73.             };
  74.  
  75.     return calories;
  76. }
  77.  
  78. Hamburger.prototype.calculatePrice = function () {
  79.  
  80.     var price = 0;
  81.     var arr = this.pricesAndCalorics;
  82.         price += arr[this.size].price;
  83.         price += arr[this.stuffing].price;
  84.  
  85.             for (var i = 0; i < this.toppings.length; i++) {
  86.                 price += arr[this.toppings[i]].price;
  87.             };
  88.  
  89.     return price;
  90. }
  91.  
  92. // маленький гамбургер с начинкой из сыра
  93. var hamburger = new Hamburger(Hamburger.SIZE_SMALL, Hamburger.STUFFING_CHEESE);
  94. // добавка из майонеза
  95. hamburger.addTopping(Hamburger.TOPPING_MAYO);
  96. // спросим сколько там калорий
  97. console.log("Calories: %f", hamburger.calculateCalories());
  98. // сколько стоит
  99. console.log("Price: %f", hamburger.calculatePrice());
  100. // я тут передумал и решил добавить еще приправу
  101. hamburger.addTopping(Hamburger.TOPPING_SAUCE);
  102. // А сколько теперь стоит? 
  103. console.log("Price with sauce: %f", hamburger.calculatePrice());
  104. console.log("Calories with sauce: %f", hamburger.calculateCalories());
Runtime error #stdin #stdout #stderr 0.52s 323200KB
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js: uncaught JavaScript runtime exception: ReferenceError: "console" is not defined.
https://ideone.com/HYPC12
language:
JavaScript (rhino 1.7.9)
created:
9 years ago
visibility:
public

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