使用es6

Question

我从本地API取回一些数据，不幸的是，我对即将发生的事情没有太多控制，我希望我可以在使用函数调用API之后转换数据。

这是我目前拥有的

transformArray = () => {
    const { rawData } = this.state
    const obj = Object.fromEntries(
      rawData.map(category => [
        category,
        {
          aboveExpectation: rawData[0].value,
          atExpectation: rawData[1].value,
          belowExpectation: rawData[2].value,
        },
        console.log('category', category),
      ]),
    )
    console.log(obj)
  }

Output: [object Object]: {aboveExpectation: 6, atExpectation: 31, belowExpectation: 18}

从API返回的原始数据看起来像这样

    data [
  {
    "name": "Animal care",
    "Gap": "Above expectation",
    "value": 6
  },
  {
    "name": "Animal care",
    "Gap": "At expectation",
    "value": 31
  },
  {
    "name": "Animal care",
    "Gap": "Below expectation",
    "value": 18
  },
  {
    "name": "Calving and calf rearing",
    "Gap": "Above expectation",
    "value": 8
  },
  {
    "name": "Calving and calf rearing",
    "Gap": "At expectation",
    "value": 29
  },
  {
    "name": "Calving and calf rearing",
    "Gap": "Below expectation",
    "value": 18
  },
  {
    "name": "Reproduction",
    "Gap": "Above expectation",
    "value": 7
  },
  {
    "name": "Reproduction",
    "Gap": "At expectation",
    "value": 25
  },
  {
    "name": "Reproduction",
    "Gap": "Below expectation",
    "value": 23
  }
]

因此，除了要有9个单独的对象之外，我希望它具有更多的可迭代性，例如

"Animals": {
    "animalCare": {
      "atExpectation": 1,
      "aboveExpectation": 13,
      "belowExpectation": 15
    },
    "calvingAndCalfRearing": {
      "atExpectation": 1,
      "aboveExpectation": 13,
      "belowExpectation": 15
    },
    "Reproduction": {
      "atExpectation": 1,
      "aboveExpectation": 13,
      "belowExpectation": 15
    }
  },

现在，我的transformArray函数已经取得了一些进展，但这并不是我想要的。我希望有人可以指出正确的方向

Answer 1

将对象数组简化为一个对象，并为每个class Base<T> { protected T Foo(); } class Derived : Base<int> { public new int Foo() => base.Foo(); } class AnotherDerived : Base<string> { public new string Foo() => base.Foo(); } 创建一个属性，并为每个name初始化/更新值：

Gap