javascript - Javascript:将JSON数组转换为级联JSON

我有这个简单的JSON数组结构

[
  [ "1000", "Kangar","Perlis" ],
  [ "1532", "Kangar", "Perlis" ],
  [ "2000", "Kuala Perlis", "Perlis" ],
  [ "6250", "Alor Setar", "Kedah" ],
  [ "6300", "Kuala Nerang", "Kedah" ]
]

现在我想像这样构造JSON

{
    "Perlis":
    {
         "Kangar": [ "1000", "1532" ],
         "Kuala Perlis": [ "2000" ]
     },
    "Kedah":
    {
        "Alor Setar":["6250"],
        "Kuala Nerang":["2000"]
    }
}

那么如何使用Javascript对象达到此结果呢？

最佳答案

尝试跟随

var arr = [
  ["1000", "Kangar", "Perlis"],
  ["1532", "Kangar", "Perlis"],
  ["2000", "Kuala Perlis", "Perlis"],
  ["6250", "Alor Setar", "Kedah"],
  ["6300", "Kuala Nerang", "Kedah"]
];

var obj = {};

arr.forEach(function(item) {
  obj[item[2]] = obj[item[2]] || {};
  obj[item[2]][item[1]] = obj[item[2]][item[1]] || [];
  obj[item[2]][item[1]].push(item[0]);
});

console.log(obj);

关于javascript - Javascript:将JSON数组转换为级联JSON，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/42528141/