对象内部 2 Functions/Methods 中的无限循环

Question

我正在尝试根据下面我的团队对象中的无限循环输出 (a) 个结果。我知道代码在我使用 for 循环自动化 calcAvg 方法之前有效。现在我在这里包含了一个 for 循环，我无法 return 返回一个值，因此，checkWinner 方法没有任何结果。

有人可以帮忙吗？

const team = {
    koalas: {
        round1: [65, 54, 49],
        round2: [23, 34, 27]
    },
    dolphins: {
        round1: [64, 23, 71],
        round2: [85, 54, 41]
    },

    calcAvg: function () {
        let d;
        let k;
        for (let i = 1; i < (this.koalas["round" + i] && this.dolphins["round" + i]); i++) {
            k = this.koalas["AvgRound" + i] = this.koalas["round" + i].reduce((a, b) => a + b) / this.koalas["round" + i].length;
            d = this.dolphins["AvgRound" + i] = this.dolphins["round" + i].reduce((a, b) => a + b) / this.dolphins["round" + i].length;

            console.log(d, k);
        }
        return [d, k];
    },

    checkWinner: function () {
        for (let i = 1; i < (this.koalas["round" + i].length && i < this.dolphins["round" + i].length); i++) {
            if (this.koalas["AvgRound" + i] >= this.dolphins["AvgRound" + i] * 2) {
                console.log(`Round: ${i}: Koalas win!`);
            } else if (this.dolphins["AvgRound" + i] >= this.koalas["AvgRound" + i] * 2) {
                console.log(`Round: ${i}: Dolphins win!`);
            } else {
                console.log(`Round: ${i}: No one wins, as at least one team needs to score double the score of the other team to win`);
            }
        }
    }
}

team.calcAvg();
team.checkWinner();

Answer 1

这一行中的一个问题：

for (let i = 1; i < (this.koalas["round" + i] && this.dolphins["round" + i]); i++) {

应该删除 i < (（以及结尾的 )）。这是因为 i 不应与另一个数字进行比较，但条件应检查 "round" + i 是否存在 （已定义）。

所以：

for (let i = 1; this.koalas["round" + i] && this.dolphins["round" + i]; i++) {

您在另一个函数中遇到了同样的问题。

const team = {
    koalas: {
        round1: [65, 54, 49],
        round2: [23, 34, 27]
    },
    dolphins: {
        round1: [64, 23, 71],
        round2: [85, 54, 41]
    },

    calcAvg: function () {
        let d;
        let k;
        for (let i = 1; this.koalas["round" + i] && this.dolphins["round" + i]; i++) {
            k = this.koalas["AvgRound" + i] = this.koalas["round" + i].reduce((a, b) => a + b) / this.koalas["round" + i].length;
            d = this.dolphins["AvgRound" + i] = this.dolphins["round" + i].reduce((a, b) => a + b) / this.dolphins["round" + i].length;

            console.log(d, k);
        }
        return [d, k];
    },

    checkWinner: function () {
        for (let i = 1; this.koalas["round" + i] && this.dolphins["round" + i]; i++) {
            if (this.koalas["AvgRound" + i] >= this.dolphins["AvgRound" + i] * 2) {
                console.log(`Round: ${i}: Koalas win!`);
            } else if (this.dolphins["AvgRound" + i] >= this.koalas["AvgRound" + i] * 2) {
                console.log(`Round: ${i}: Dolphins win!`);
            } else {
                console.log(`Round: ${i}: No one wins, as at least one team needs to score double the score of the other team to win`);
            }
        }
    }
}

team.calcAvg();
team.checkWinner();

对您的代码的更笼统的评论：定义名称中具有序列号的对象属性是一种反模式。在那种情况下，您应该只定义一个数组而不是普通对象。

其次，由于您将考拉信息与海豚信息相关联每轮，您真的应该将这些数据合并到一个对象中每轮。所以在你的情况下，你应该更好地组织你的数据：

rounds: [
    [
        {koalas: 65, dolphins: 64}, 
        {koalas: 54, dolphins: 23}, 
        {koalas: 49, dolphins: 71}
    ], [
        {koalas: 23, dolphins: 85},
        {koalas: 34, dolphins: 54},
        {koalas: 27, dolphins: 41}
    ]
]

显然，这意味着您的代码需要进行大量更改。

对象内部 2 Functions/Methods 中的无限循环

Infinite Loops in 2 Functions/Methods inside an Object

javascript

methods

for-loop

function

infinite-loop