如何在 JSON 數組 Javascript 中獲取字段值

Question

我有一個數組作為輸入，其中包含一些 JSON。

JSON 具有相同的“地址”字段，我怎樣才能在 Json 數組中獲取所有“街道”、“名稱”、“類型”？

輸入

[
    {

        "address": {
              "street" : "aaaa",
              "name": "dsd",
              "type": "sds"
         }
    },
    {
        "address": {
              "street" : "bbbb",
              "name": "gdg",
              "type": "gdg"
         }
    },
    ...
    ]

Output

{"address": [
    {
       "street" : "aaaa",
       "name": "dsd",
       "type": "sds"
     },
    {
       "street" : "bbbb",
       "name": "gdg",
       "type": "gdg"
     },
   ...
  ]


}

Answer 1

您可以使用reduce將數組累加到 object 中， address鍵等於數組，然后將項目推入其中。

 const data = [ { "address": { "street": "aaaa", "name": "dsd", "type": "sds" } }, { "address": { "street": "bbbb", "name": "gdg", "type": "gdg" } }, ] const result = data.reduce((acc, item) => { acc.address.push(item) return acc; }, { address: [] }) console.log(result)

或者你可以使用forEach循環

 const data = [ { "address": { "street": "aaaa", "name": "dsd", "type": "sds" } }, { "address": { "street": "bbbb", "name": "gdg", "type": "gdg" } }, ] let result = { address: []} data.forEach(item => { result.address.push(item); }) console.log(result)

Answer 2

const address = data.reduce((acc, addr) => {
  return {
    address: acc.address.concat(addr)
  };
}, { address: [] });