javascript - 通过使用循环构建矩阵的问题

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的数组)。将有 52 个卡牌数组，每个卡牌数组包含一个卡号、花色和数值。但在我调用该函数后，card 作为字符串而不是数组返回，即使它是用数组括号 [] 定义的。谁能看到我在这里做错了什么吗？

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，只是为了更容易访问。