javascript - 使用 JS 解析 Json 中的嵌套对象

Question

这个问题已经有答案了:

How can I access and process nested objects, arrays, or JSON? (31 个回答)

已关闭 10 年前。

我有一个这种格式的 Json:

{"year":{"month1":{"date1":{"device1":{"users":6}}}}

示例:

{"2013":{"2":{"5":{"GT-N7000":{"users":1}},"6":{"GT-N7000":{"users":9},"HTC Sensation Z710a":{"users":1}},"7":{"GT-N7000":{"users":15},"HTC Sensation Z710a":{"users":2},"M903":{"users":1}}}}}

如何从 Json 生成新的用户数组。例如:

GT-N7000 = [1, 9, 15]
M903 = [1]

我尝试过嵌套for循环，我尝试过 for..in也循环。我确信我犯了一个错误。我有什么想法可以过滤/解析此类嵌套 json 对象所需的信息吗？

Answer 1

我想你会做这样的事情:

var json = {"2013":{"2":{"5":{"GT-N7000":{"users":1}},"6":{"GT-N7000":{"users":9},"HTC Sensation Z710a":{"users":1}},"7":{"GT-N7000":{"users":15},"HTC Sensation Z710a":{"users":2},"M903":{"users":1}}}}}; 

var result = {}, year, month, date, item;
for (year in json) {
  for(month in json[year]) {
    for(date in json[year][month]) {
       for(item in json[year][month][date]) {
          if(item in result) {
              result[item].push(json[year][month][date][item].users)  // this bit might need editing?
          } else {
              result[item] = [json[year][month][date][item].users] // this be also might need editing
          }
       }
    }
  }
}