在JavaScript代码中,我试图通过存储的数据来重命名对象。我尝试按照此站点(http://thedesignspace.net/MT2archives/000381.html)的建议使用pathTo,但是控制台返回“ ReferenceError:'pathTo'未定义”。我的代码如下所示:

// This code defines the Object constructor Card, used to make the card objects
var Card = function() {
    this.face = theFace(this);
    this.suit = theSuit(this);
    this.value = theValue(this);
};

// This code creates the Deck to be used.
var deck = [];
for ( i=0 ; i<52 ; i++ ) {
    deck.push( i );
};
for ( i=51 ; i>0 ; i-- ) {
    var random = Math.floor(Math.random()*i);
    var temp = deck[random];
    deck[random] = deck[i];
    deck[i] = temp;
};
// 0-12 is Spades.
// 13-25 is Hearts.
// 26-38 is Clubs.
// 39-51 is Diamonds.

// Now we create the hand of the player and dealer
var player = [];
var dealer = [];

// Now to deal a card to player
player.push(deck.pop());
dealer.push(deck.pop());

// and another
player.push(deck.pop());
dealer.push(deck.pop());

// function theFace gives the face of a card
function theFace( card ) {
    var faces = ["King","Ace","2","3","4","5","6","7","8","9","10","Queen","Jack"];
    return(faces[card%13]);
};

// function theValue uses 'switch' to determine points from a card
function theValue(card) {
    var value = card % 13;
    switch( value ) {

        case(0):
        case(11):
        case(12):
            value = 10;
            break;

        case(1):
            value = 11;
            break;

        default:
            value = value;
            break;

    };
    return value;
};

// function theSuit returns the suit of a card
function theSuit(card) {
    var suit;
    if(card>38) {
        suit = "Diamonds";
    }else if(card>25) {
        suit = "Clubs";
    }else if(card>12) {
        suit = "Hearts";
    }else {
        suit = "Spades";
    };
    return suit;
};

// function toObject the first (numbered) card of of a hand
// and turns it into an Object with the desired properties
function toObject( hand ) {
    var card = hand.shift();
    if (typeof(card) !== "number") {
        hand.unshift(card);
    } else {
        var card = new Card ();
        card = pathTo[card.suit + card.face];
    };
    return hand;
};

console.log(player);
toObject(player);
toObject(player);
console.log(player);


我试图重命名我要从typeof ===“ number”更改为typeof ===“ object”的卡,以便在多次运行代码时(因此该函数)我没有重复的对象名称在手中。

以下是控制台打印内容的一些示例:

[ 19, 46 ]
ReferenceError: 'pathTo' is undefined




[ 31, 18 ]
ReferenceError: 'pathTo' is undefined


必须有一种方法可以做到,我只是找不到方法。

在toObject函数中,我尝试获取手数组中的第一个数字(卡)并将其变成一个对象,该对象将其限定符描述为标准52张卡片组的一张卡片。编辑:我只是意识到我什至不推它。我将尝试一些东西,看看是否会起作用。

EDITEDITEDIT_SOLVED:
我已经做了!事实证明,我不需要更改名称,代码将以某种方式将其分开。为了使它正确运行,我所需要做的就是:

更换

var Card = function() {
    this.face = theFace(this);
    this.suit = theSuit(this);
    this.value = theValue(this);
};




var Card = function(card) {
    this.face = theFace(card);
    this.suit = theSuit(card);
    this.value = theValue(card);
};




function toObject( hand ) {
    var card = hand.shift();
    if (typeof(card) !== "number") {
        hand.unshift(card);
    } else {
        var card = new Card ();
        card = pathTo[card.suit + card.face];
    };
    return hand;
};




function toObject( hand ) {
    var card = hand.shift();
    if (typeof(card) !== "number") {
        hand.unshift(card);
    } else {
        var card = new Card (card);
        hand.push(card);
    };
    return hand;
};


谢谢您的帮助!

最佳答案

正如@mattbornski指出的那样,JavaScript中没有pathTo对象,据我所知,任何地方的浏览器都不支持该对象。那篇文章似乎已经省略了这部分代码。

不过,根据您的使用方式,您需要对代码进行一些更改:

创建一个pathTo对象,如下所示:

pathTo = {};


要么

pathTo = new Object();


然后,在尝试将每个新的Card对象添加到pathTo之前(或在尝试使用它查找卡片之前),给每个对象一个合适的衣服和一个脸。例如,您可以编写:

myCard = new Card(23);


要么

myCard = new Card('spade','2');


最后,当您的卡片既有面孔又有西装时,将其添加到pathTo对象中,如下所示:

pathTo[this.suit + this.face] = this; // use this inside the Card constructor


要么

pathTo[myCard.suit + myCard.face] = myCard; // use this with an instance of a Card object


然后,您可以使用以下命令查找卡片:

pathTo['spade2']

07-24 09:36