JavaScript learning notes _ simple implementation of enumeration types, playing card applications, javascript learning notes

JavaScript learning notes _ simple implementation of enumeration types, playing card applications, javascript learning notes

As follows:

// Implement the Enumeration type. the playing card application function creatEnum (p) {// constructor var Enumeration = function () {throw 'can not Instantiate Enumerations ';}; // rewrite the prototype and assign the prototype 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 property, method Enumeration. values = []; for (var n in p) {// transfers each element of object p to a separate object o And store these objects o into the class property values array var o = Object. create (proto); // object o inherits the three instance methods and constructor Enumeration of Enumeration. prototype. valueOf = function () {return this. value * 1 ;}; // rewrite the valueof method o of the prototype. name = n; o. value = p [n]; Enumeration [n] = o; // Add the class attribute name with the value of 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 ;}// = v Ar Coin = creatEnum ({Penny: 1, Nickel: 5, Dime: 10, Quarter: 25}); console. log (Coin);/* result: the enumerated 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, inherits and modifies the valueof method to convert value into numbers for calculation // === use the creatEnum () function () to represent a pair of 54 cards = 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 (. suit <B. suit) retu Rn-1; if (. suit> B. suit) return 1; return 0;}; Card. orderByRank = function (a, B) {if (. rank <B. rank) return-1; if (. rank> B. rank) return 1; return 0 ;}; // define a pair of standard playing card functions Deck () {var cards = this. cards = []; Card. suit. foreach (function (s) {// execute 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) ;}}}) ;}// shuffles and returns the washed Card. prototype. shuffle = function () {var deck = this. cards, len = deck. length; for (vari = 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;}; // returns the card array 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 );}

The above is the summary of JavaScript learning notes for everyone _ simple implementation of Enumeration type, all the content of the poker application, hope to help everyone, a lot of support for the house ~