Javascript 创建类似json的键和值

这是我的json数据 我想用下划线来做这件事

var data1=[
    {"year":2000,
     "country":"Madagascar",
     "country_id":847,
     "indicator":"Current account balance - National Currency (millions)"
    },
    {"year":2005,
     "country":"Madagascar",
     "country_id":847,
     "indicator":"Current account balance - National Currency (millions)"
    },
    {"year":2000,
     "country":"Madagascar",
     "country_id":847,
     "indicator":"Net Income - National Currency (millions)"
    },
    {"year":2005,
     "country":"Madagascar",
     "country_id":847,
     "indicator":"Net Income - National Currency (millions)"
    }
]

有谁能帮我解决这个问题吗 使用下划线.js下划线有一个u.groupBy（）方法可以完成繁重的工作，但它会创建一个对象，每个值都有一个键：

{
  "key":"Madagascar"
  "values":[
    {"year":2000,
     "country":"Madagascar",
     "country_id":847,
     "indicator":"Current account balance - National Currency (millions)"
    },
    {"year":2005,
     "country":"Madagascar",
     "country_id":847,
     "indicator":"Current account balance - National Currency (millions)"
    }
  ]
}

下面是groupedData1的值：

var groupedData1 = _.groupBy(data1, 'country');

要转换为键/值数组，可以使用.each（）和.keys（）遍历每个国家/地区：

{"Madagascar": [
    {
        "year": 2000,
        "country": "Madagascar",
        "country_id": 847,
        "indicator": "Current account balance - National Currency (millions)"
    }, 
    {
        "year": 2005,
        "country": "Madagascar",
        "country_id": 847,
        "indicator": "Current account balance - National Currency (millions)"
    }, 
    {
        "year": 2000,
        "country": "Madagascar",
        "country_id": 847,
        "indicator": "Net Income - National Currency (millions)"
    }, 
    {
        "year": 2005,
        "country": "Madagascar",
        "country_id": 847,
        "indicator": "Net Income - National Currency (millions)"
    }
]}

var groupedData2 = [];

_.each(_.keys(groupedData1), function (country) {
    groupedData2.push({
        "key": country, 
        "values": groupedData1[country]
    });
});

这将创建一个对象数组，每个国家一个对象：

{"Madagascar": [
    {
        "year": 2000,
        "country": "Madagascar",
        "country_id": 847,
        "indicator": "Current account balance - National Currency (millions)"
    }, 
    {
        "year": 2005,
        "country": "Madagascar",
        "country_id": 847,
        "indicator": "Current account balance - National Currency (millions)"
    }, 
    {
        "year": 2000,
        "country": "Madagascar",
        "country_id": 847,
        "indicator": "Net Income - National Currency (millions)"
    }, 
    {
        "year": 2005,
        "country": "Madagascar",
        "country_id": 847,
        "indicator": "Net Income - National Currency (millions)"
    }
]}

var groupedData2 = [];

_.each(_.keys(groupedData1), function (country) {
    groupedData2.push({
        "key": country, 
        "values": groupedData1[country]
    });
});

---

你的问题是？所以你不想要“净收入”？我不想这样，我想根据国家的uniq及其价值来过滤它。在这个样本数据中，每年有两个指标。您想选择单个指标，还是分开指标？能否编辑问题以显示所需的JSON格式？我不确定单独的指示器应该如何显示。