Javascript : 如何将现有的 JSON 对象转换为基于自定义键的对象？

Question

我需要 convert/destructure 我现有的 JSON 对象到一个新的基于键的表单 JSON, 请看下面的输入JSON

注意：下面的数组有 n 个对象。

输入JSON:

[
    {
        "processId": 95,
        "pid": "PID_0",
        "actionData": [
            {
                "actionId": 96,
                "action": "Sbend",
                "avg": 0.09134998917579651,
                "avgVid": "",
                "max": 0.13287270069122314,
                "maxVid": ",
                "maxPos": 1,
                "min": 0.06643635034561157,
                "minVid": "",
                "minPos": 0,
                "total": 8,
                "totalTime": null
            },
            {
                "actionId": 98,
                "action": "Stand",
                "avg": 0.7355453372001648,
                "avgVid": "",
                "max": 2.889981508255005,
                "maxVid": "",
                "maxPos": 11,
                "min": 0.06643635034561157,
                "minVid": "",
                "minPos": 9,
                "total": 28,
                "totalTime": null
            }
        ]
    }
]

这里我需要获取 'pid' 键值并将其设置为现有 JSON 的根键，下面有一个预期的输出

预期输出

[
    "PID_0" : {
        "processId": 95,
        "actionData": [
            {
                "actionId": 96,
                "action": "Sbend",
                "avg": 0.09134998917579651,
                "avgVid": "",
                "max": 0.13287270069122314,
                "maxVid": ",
                "maxPos": 1,
                "min": 0.06643635034561157,
                "minVid": "",
                "minPos": 0,
                "total": 8,
                "totalTime": null
            },
            {
                "actionId": 98,
                "action": "Stand",
                "avg": 0.7355453372001648,
                "avgVid": "",
                "max": 2.889981508255005,
                "maxVid": "",
                "maxPos": 11,
                "min": 0.06643635034561157,
                "minVid": "",
                "minPos": 9,
                "total": 28,
                "totalTime": null
            }
        ]
    }
]

我用来实现此目的的代码，但它没有给我正确的结果，

let b = Object.keys(itemsValues).reduce(
  (p, c) => { console.log(p)
    for (let item of itemsValues[c].actionData) {
      p.pid.actionData.push(item);
    }
    return p;
  }, {
    pid: {
      actionData: [],
    },
  }
);

请帮我解决这个问题，它真的帮了我很多。谢谢。

Answer 1

将数组缩减为您要查找的对象作为输出
根据接收到的对象设置新密钥pid
然后将pid从原来的位置移除

代码方面：

const result = input.reduce((finalObject, obj) => {
    finalObject[obj.pid] = obj;
    delete obj.pid;
    return finalObject;
}, {});

以下是工作片段：

const input = [{
  processId: 95,
  pid: 'PID_0',
  actionData: [{
      actionId: 96,
      action: 'Sbend',
      avg: 0.09134998917579651,
      avgVid: '',
      max: 0.13287270069122314,
      maxVid: '',
      maxPos: 1,
      min: 0.06643635034561157,
      minVid: '',
      minPos: 0,
      total: 8,
      totalTime: null,
    },
    {
      actionId: 98,
      action: 'Stand',
      avg: 0.7355453372001648,
      avgVid: '',
      max: 2.889981508255005,
      maxVid: '',
      maxPos: 11,
      min: 0.06643635034561157,
      minVid: '',
      minPos: 9,
      total: 28,
      totalTime: null,
    },
  ],
}, ];

const result = input.reduce((finalObject, obj) => {
  finalObject[obj.pid] = obj;
  delete obj.pid;
  return finalObject;
}, {});

console.log(result)

Javascript : 如何将现有的 JSON 对象转换为基于自定义键的对象？

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