Question

这是我的代码：

var shuffle = function() {
    var set = [];
    var waiter = [];
    var suitset = ["Hearts","Clubs","Diamonds","Spades"];
    for (var r = 1;r <= 13;r++) {
        for (var s = 0;s < suitset.length;s++) {
            card = [];
            var cardeval = evalcard(r); //This is an input from another function
            card.push(cardeval[0]);
            card.push(suitset[s]);
            card.push(cardeval[1]);
            waiter.push(card);
        }
    }
    while (waiter.length) { //This is what randomizes the deck aka shuffles
        set.push(waiter.splice(Math.random() * waiter.length,1));
    }

    return set;
};

我正在尝试构建一个卡片矩阵（我在这里使用矩阵作为数组数组）。将有52个卡阵列阵列，每个阵列都有卡号，套装和价值。但是在我调用函数之后，card作为字符串而不是数组返回，即使它是使用数组包含程序[]定义的。谁能看到我在这里做错了什么？

Answer 1

<强> Live Demo

function evalcard() { return [1,2]}

    var shuffle = function() {
        var set = [];
        var waiter = [];
        var suitset = ["Hearts","Clubs","Diamonds","Spades"];

        for (var r = 1;r <= 13;r++) {
            for (var s = 0;s < suitset.length;s++) {
                var card = {},
                    cardeval = evalcard(r); 

                card.num = cardeval[0];
                card.suite = suitset[s];
                card.val = cardeval[1];

                waiter.push(card);
            }
        }

        while (waiter.length) { //This is what randomizes the deck aka shuffles
            var randomNum = Math.floor(Math.random() * (waiter.length-1));
            set.push(waiter[randomNum]);
            waiter.splice(randomNum ,1)
        }
        return set;
    };

    var test = shuffle();
    console.log(test);
    alert(test[0].suite);

将卡片制作成对象，然后将它们传递到数组中，只是为了便于访问。

Answer 2

为我工作

http://jsfiddle.net/mplungjan/LuUT5/

function evalcard() { return [1,2]}
var shuffle = function() {
    var set = [];
    var waiter = [];
    var suitset = ["Hearts","Clubs","Diamonds","Spades"];
    for (var r = 1;r <= 13;r++) {
        for (var s = 0;s < suitset.length;s++) {
            card = [];
            var cardeval = evalcard(r); //This is an input from another function
            waiter.push([cardeval[0],suitset[s],cardeval[1]]);
        }
    }
    while (waiter.length) { //This is what randomizes the deck aka shuffles
        var x = waiter.splice(Math.random() * waiter.length,1);
        set.push(x);
    }
    return set;
};
var deck = shuffle()[0];
alert(deck[0][1])

通过使用循环构建矩阵的问题

2 个答案: