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映射对象属性并转换为字符串

ecmascript-6 typescript angular javascript

-5

firasKoubaa · 技术社区 · 6 年前

我有以下数据:

let myInputArray = [
    {
        "id": 1,
        "commercialRanges": [
          {
            "rangeId": "305",
            "rangeName": "FIXE"
          },
          {
            "rangeId": "306",
            "rangeName": "POSTPAID"
          },
        ],
        "active": true,
        "pefName": "Alertes",
        "roles": "ADVISOR",
        "equipmentTypes": "PC",
      },
      ...
      {
        "id": 1523,
        "commercialRanges": [
          {
            "rangeId": "700",
            "rangeName": "POSTPAID"
          },
          {
            "rangeId": "500",
            "rangeName": "PREPAID"
          },
        ]
        ,
        "active": true,
        "pefName": "Alertes",
        "roles": "ADVISOR",
        "equipmentTypes": "PC",
      },
    ]

转换属性“commercialRanges”的格式(对象数组) “值)

我得到的数组如下所示:

myResultArray = [
{
    "id": 1,
    "commercialRanges": "FIXE,POSTPAID",
    "active": true,
    "pefName": "Alertes",
    "roles": "ADVISOR",
    "equipmentTypes": "PC",
  },
  ...
  {
    "id": 1523,
    "commercialRanges": "POSTPAID,PREPAID",
    "active": true,
    "pefName": "Alertes",
    "roles": "ADVISOR",
    "equipmentTypes": "PC",
  },
]

“商业范围”

"commercialRanges": [
      {
        "rangeId": "305",
        "rangeName": "FIXE"
      },
      {
        "rangeId": "306",
        "rangeName": "POSTPAID"
      },
    ]

到 :

"commercialRanges": "FIXE,POSTPAID"

2 回复 | 直到 6 年前

Nikhil Aggarwal 6 年前

你可以试着用 Array.forEach , Array.map 和 Array.join

let myInputArray = [{"id":1,"commercialRanges":[{"rangeId":"305","rangeName":"FIXE"},{"rangeId":"306","rangeName":"POSTPAID"}],"active":true,"pefName":"Alertes","roles":"ADVISOR","equipmentTypes":"PC"}];
  
myInputArray.forEach(o => o.commercialRanges = o.commercialRanges.map(r => r.rangeName).join(','));
console.log(myInputArray);

Patryk Cieszkowski 6 年前

myInputArray 排列并减少 commercialRanges 一根绳子;为此,还需要使用循环。

Array.prototype.reduce 你的方法 我的输入阵列 ,然后 Array.prototype.map 在数组,因为这是实现这一点最简单/最优雅的方法。你也可以用 map 对于两个循环,以及 reduce . 真的由你决定。我来了

let myInputArray = [
  {
      "id": 1,
      "commercialRanges": [
        {
          "rangeId": "305",
          "rangeName": "FIXE"
        },
        {
          "rangeId": "306",
          "rangeName": "POSTPAID"
        },
      ],
      "active": true,
      "pefName": "Alertes",
      "roles": "ADVISOR",
      "equipmentTypes": "PC",
    },
    ...
    {
      "id": 1523,
      "commercialRanges": [
        {
          "rangeId": "700",
          "rangeName": "POSTPAID"
        },
        {
          "rangeId": "500",
          "rangeName": "PREPAID"
        },
      ]
      ,
      "active": true,
      "pefName": "Alertes",
      "roles": "ADVISOR",
      "equipmentTypes": "PC",
    },
  ]

const myInputString = myInputArray.reduce((arr, obj) => [
  ...arr,
  {
    ...obj,
    commercialRanges: obj.commercialRanges.map(rObj => rObj.rangeName).join(',')
  }
], [])

循环两个数组

const myInputString = myInputArray.map(obj => ({
    ...obj,
    commercialRanges: obj.commercialRanges.map(rObj => rObj.rangeName).join(',')
  })
)