JavaScript Learning Notes: Simple Implementation of Enumeration Types and Poker Card Applications

As shown below:

//Implement enumeration type, card application
function creatEnum(p){
  //Constructor
  var Enumeration = function(){throw 'can not Instantiate Enumerations';};
  //Rewrite the prototype and assign it to the variable proto
  var proto = Enumeration.prototype = {
    constructor: Enumeration,
    toString: function(){return this.name;},
    valueOf: function(){return this.value;},
    toJSON: function(){return this.name;}
  };
  //Add class attributes, methods
  Enumeration.values = [];
  for(var n in p){ //Each element of object p is stored separately into a separate object o, and these objects o are stored in the class attribute values array
    var o = Object.create(proto); //Object o inherits from Enumeration3Enumeration.prototype.valueOf = function(){return this.value
    ;};*1; //Rewrite the original prototype valueof method
    o.name = n;
    o.value = p[n];
    Enumeration[n] = o; //Add class attribute name, value is object o
    Enumeration.values.push(o);
  }
  Enumeration.foreach = function (f,c) {
    for(var i =0;i<this.values.length;i++{
      f.call(c,this.values[i]);
    }
  };
  return Enumeration;
}
//===
var Coin = creatEnum( {Penny:1,Nickel:5,Dime:10,Quarter:25};
console.log(Coin);
/*Result: Enumeration object Coin
 { [Function]
 values:
 [ { [Number: 10] name: 'Penny', value: 1 },
   { [Number: 50] name: 'Nickel', value: 5 },
   { [Number: 100] name: 'Dime', value: 10 },
   { [Number: 250] name: 'Quarter', value: 25 } ],
 Penny: { [Number: 10] name: 'Penny', value: 1 },
 Nickel: { [Number: 50] name: 'Nickel', value: 5 },
 Dime: { [Number: 100] name: 'Dime', value: 10 },
 Quarter: { [Number: 250] name: 'Quarter', value: 25 },
 foreach: [Function] }
 */
console.log(Coin.Dime+2; //102 Coin.Dime itself inherits from the enumeration object and modifies the valueof method to convert the value to a number for calculation
//===Use the function creatEnum() to represent a deck of54张的扑克牌==
function Card(suit,rank){
  this.suit = suit;
  this.rank = rank;
}
Card.Suit = creatEnum( {Clubs:1,Diamonds:2,Heates:3,Spades:4,Joker:5};
Card.Rank = creatEnum( {Three:3Four:4Five:5Six:6Seven:7, Eight:8, Nine:9, Ten:10,
            , Jack:11, Queen:12, King:13, Ace:14, Two:15, SmallJoker:16, BigJoker:17};
Card.prototype.toString = function() {
  return this.rank.toString(); +' of '+this.suit.toString();
};
Card.prototype.compareTo = function(that) {
  if(this.rank < that.rank) return -1;
  if(this.rank > that.rank) return 1;
  return 0;
};
Card.orderBySuit = function(a, b) {
  if(a.suit < b.suit) return -1;
  if(a.suit > b.suit) return 1;
  return 0;
};
Card.orderByRank = function(a, b) {
  if(a.rank < b.rank) return -1;
  if(a.rank > b.rank) return 1;
  return 0;
};
//Define a standard deck of playing cards
function Deck() {
  var cards = this.cards = [];
  Card.Suit.foreach(function(s) { //Execute for each suit
    if(s !=5cards.push(new Card(s, r));
      Card.Rank.foreach(function(r) {
        if (r != 16 ) && r != 17cards.push(new Card(s, r));
          else {
        }
      });
    }
      Card.Rank.foreach(function (r) {
        if(r == 16); cards.push(new Card(s, r));
        if(r == 17); cards.push(new Card(s, r));
      });
    }
  });
}
//Shuffle the cards and return the shuffled deck
Deck.prototype.shuffle = function() {
  var deck = this.cards, len = deck.length;
  for(var i = len-1; i > 0; i--{
    var r = Math.floor(Math.random()*(i+1); temp;
    temp = deck[i], deck[i] = deck[r], deck[r] = temp;
  }
  return this;
};
//Deal cards and return the array of cards
Deck.prototype.deal = function(n){
  if(this.cards.length<n) throw 'Out of cards';
  return this.cards.splice(this.cards.length-n, n);
};
//Start:
var deck = new Deck();
var deck1 =deck.shuffle();
var n = 17;
var hand1 = deck1.deal(n).sort(Card.orderByRank);
for(var i = 0;i<n;i++{
  var body = document.getElementById('body');
  var div = document.createElement('div');
  div.style.width = '50px';
  div.style.height = '100px';
  div.style.border = '1px solid gray';
  div.style.float = 'left';
  div.innerHTML = hand1[i].suit.name+' '+hand1[i].rank.name;
  body.appendChild(div);
  console.log(hand1[i].suit.name+' '+hand1[i].rank.name);
}

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