javascript - 在多维数组中搜索值

Question

我有一系列项目:

items = [{name: "microphone", cost:1000, improvement:1},
     {name: "guitar", cost:5000, improvement: 10},
     {name: "keyboard", cost: 10000, improvement: 50},
     {name: "band member", cost: 20000, improvement: 100}
    ];

我想通过提供项目的名称来找到项目的“改进”。

我已经尝试过这个:

var upgrade = items.findOne({ name: nameInput });

但我收到错误:

Exception while invoking method 'buy' TypeError: Object [object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object] has no method 'findOne'

如果我无法使用 findone 是否有其他方法可以实现我的目标？

Answer 1

试试这个:

  items = [{name: "microphone", cost:1000, improvement:1},
         {name: "guitar", cost:5000, improvement: 10},
         {name: "keyboard", cost: 10000, improvement: 50},
         {name: "band member", cost: 20000, improvement: 100}
        ];

如果您的商品名称是:

itemname = "microphone";    
    items.forEach(function(obj) {
        if(obj.name == itemname){
         return obj.improvement;
        }
    });