使用Javascript中的变量值访问嵌套对象

我在做游戏。最终用户将在12架可用战斗机中选择一架。假设他们选择了“Ryu”。但他们本可以选择“春丽”。玩家选择将存储在变量“selectedPlayer”中。现在我需要获取/访问与用户选择相匹配的对象（或其成员）。我尝试了很多方法，包括下面所示的方法，但是我在控制台中得到了：“uncaughtypeerror:无法读取undefined的属性'Ryu'

我需要能够进入“玩家”对象并访问所选fighers对象的成员。我可以写一堆if语句，但那不是很干净。我可以这样做吗

var playerOne = {
    Name: players.<some variable>.Name,
    Country: players.<some variable>.Country,
    Slogan: players.<some variable>.Slogan,
    smImage: players.<some variable>.smImg,
    lgImage: players.<some variable>.lgImg,
    Attack: players.<some variable>.attack
};

var playerTwo = {
    Name: players.<some variable>.Name,
    Country: players.<some variable>.Country,
    Slogan: players.<some variable>.Slogan,
    smImage: players.<some variable>.smImg,
    lgImage: players.<some variable>.lgImg,
    Attack: players.<some variable>.attack
};

var playerOne={
姓名：玩家姓名，
国家：球员……国家，
标语：玩家..标语，
smImage:玩家..smImg，
lgImage:players..lgImg，
攻击：玩家…攻击
};
变量playerTwo={
姓名：玩家姓名，
国家：球员……国家，
标语：玩家..标语，
smImage:玩家..smImg，
lgImage:players..lgImg，
攻击：玩家…攻击
};

---

也许有不同的想法。我愿意接受任何有效的方法。谢谢。

您需要先定义映射，然后才能访问它。另外，

Ryu

似乎没有

标语

var players = {
    Ryu:  {
        Name: "Ryu",
        Country: "Japan",
        // Shoudldn't this be "Slogan"?
        Text: "The answer lies in the heart of battle.",
        smImg: "../images/small/ryu.png",
        lgImg: "../images/large/ryu.jpg",
        attack: [1,5,10,15,20,25]
    },
    ChunLi: {
        Name: "Chun Li",
        Country: "China",
        Slogan: "Want to see my Kung-Fu? I'll show you.",
        smImg: "../images/small/chunli.png",
        lgImg: "../images/large/chunli.jpg",
        attack: [1,4,11,15,21,25]
    }
}

var selectedPlayer = "Ryu";
var Slogan = players[selectedPlayer]['Slogan']; 
console.log(Slogan);

---

您需要先定义映射，然后才能访问它。另外，

Ryu

似乎没有

标语

var players = {
    Ryu:  {
        Name: "Ryu",
        Country: "Japan",
        // Shoudldn't this be "Slogan"?
        Text: "The answer lies in the heart of battle.",
        smImg: "../images/small/ryu.png",
        lgImg: "../images/large/ryu.jpg",
        attack: [1,5,10,15,20,25]
    },
    ChunLi: {
        Name: "Chun Li",
        Country: "China",
        Slogan: "Want to see my Kung-Fu? I'll show you.",
        smImg: "../images/small/chunli.png",
        lgImg: "../images/large/chunli.jpg",
        attack: [1,4,11,15,21,25]
    }
}

var selectedPlayer = "Ryu";
var Slogan = players[selectedPlayer]['Slogan']; 
console.log(Slogan);

---

您的错误是因为您在定义

播放器之前正在引用它。试试这个：

var players = {
    Ryu:  {
        Name: "Ryu",
        Country: "Japan",
        Text: "The answer lies in the heart of battle.",
        smImg: "../images/small/ryu.png",
        lgImg: "../images/large/ryu.jpg",
        attack: [1,5,10,15,20,25]
    },
    ChunLi: {
        Name: "Chun Li",
        Country: "China",
        Slogan: "Want to see my Kung-Fu? I'll show you.",
        smImg: "../images/small/chunli.png",
        lgImg: "../images/large/chunli.jpg",
        attack: [1,4,11,15,21,25]
    }
}

var selectedPlayer = "Ryu";
var Slogan = players[selectedPlayer]['Slogan'];
console.log(Slogan);

您的错误是因为您在定义
播放器之前正在引用它。试试这个：

var players = {
    Ryu:  {
        Name: "Ryu",
        Country: "Japan",
        Text: "The answer lies in the heart of battle.",
        smImg: "../images/small/ryu.png",
        lgImg: "../images/large/ryu.jpg",
        attack: [1,5,10,15,20,25]
    },
    ChunLi: {
        Name: "Chun Li",
        Country: "China",
        Slogan: "Want to see my Kung-Fu? I'll show you.",
        smImg: "../images/small/chunli.png",
        lgImg: "../images/large/chunli.jpg",
        attack: [1,4,11,15,21,25]
    }
}

var selectedPlayer = "Ryu";
var Slogan = players[selectedPlayer]['Slogan'];
console.log(Slogan);

谢谢，我能让它工作了。Ryu的标语是我在将会员名称从“文本”改为“标语”时修正的打字错误。接得好。谢谢，我能让它工作了。Ryu的标语是我在将会员名称从“文本”改为“标语”时修正的打字错误。好的，谢谢你。我在发帖后不久就意识到了我的错误。谢谢你的意见，谢谢。我在发帖后不久就意识到了我的错误。谢谢你的意见。