首页 / 脚本样式 / JavaScript / JavaScript学习笔记整理_简单实现枚举类型,扑克牌应用

//实现枚举类型,扑克牌应用function creatEnum（p）{//构造函数var Enumeration = function（）{throw "can not Instantiate Enumerations";};//重写原型并将原型赋值给变量protovar proto = Enumeration.prototype = {constructor:Enumeration,toString:function（）{return this.name;},valueOf:function（）{return this.value;},toJSON:function（）{return this.name;}};//添加类属性,方法Enumeration.values = [];for（var n in p）{ //将对象p的每个元素都单独转存到一个单独的对象o里面,并将这些对象o存入类属性values数组中var o = Object.create（proto）; //对象o继承了Enumeration的3个实例方法和构造函数Enumeration.prototype.valueOf = function（）{return this.value*1;}; //重写原型的valueof方法o.name = n;o.value = p[n];Enumeration[n] = o; //添加类属性name,值为对象oEnumeration.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）;/*结果:枚举对象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本身继承自枚举对象,继承并修改了valueof方法用来将value转化为数字做计算 //===使用函数creatEnum（）来表示一副54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:3,Four:4,Five:5,Six:6, Seven: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;};//定义一副标准扑克牌function Deck（）{var cards = this.cards = [];Card.Suit.foreach（function（s）{ //对每个花色执行if（s！=5） {Card.Rank.foreach（function （r） {if （r ！= 16 && r ！= 17） {cards.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））;}）;}}）;}//洗牌,并返回洗好的牌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;};//发牌,并返回牌的数组Deck.prototype.deal = function（n）{if（this.cards.length<n） throw "Out of cards";return this.cards.splice（this.cards.length-n, n）;};//开始: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）;}