如何使用 javascript 将 object 与 arrays 加入到单个阵列中？

Question

这就是我所拥有的（ wealthByDistribution ），我需要一个像（ expectedArray ）这样的解决方案。

const wealthByDistribution = {
  CheckingAccount: [
    {
      "year": 2016,
      "month": 4,
      "value": 10
    },
    {
      "year": 2016,
      "month": 5,
      "value": 0
    },
    {
      "year": 2016,
      "month": 6,
      "value": 0
    },
    {
      "year": 2016,
      "month": 7,
      "value": 0
    }
  ],
  Company: [
    {
      "year": 2016,
      "month": 4,
      "value": 0
    },
    {
      "year": 2016,
      "month": 5,
      "value": 0
    },
    {
      "year": 2016,
      "month": 6,
      "value": 0
    },
    {
      "year": 2016,
      "month": 7,
      "value": 110
    }
  ],
  InvestmentAccount: [
    {
      "year": 2016,
      "month": 4,
      "value": 0
    },
    {
      "year": 2016,
      "month": 5,
      "value": 0
    },
    {
      "year": 2016,
      "month": 6,
      "value": 0
    },
    {
      "year": 2016,
      "month": 7,
      "value": 220
    }
  ],
  InvestmentInsurance: [
    {
      "year": 2016,
      "month": 4,
      "value": 0
    },
    {
      "year": 2016,
      "month": 5,
      "value": 0
    },
    {
      "year": 2016,
      "month": 6,
      "value": 0
    },
    {
      "year": 2016,
      "month": 7,
      "value": 330
    }
  ],
  Loan: [
    {
      "year": 2016,
      "month": 4,
      "value": 0
    },
    {
      "year": 2016,
      "month": 5,
      "value": 0
    },
    {
      "year": 2016,
      "month": 6,
      "value": 0
    },
    {
      "year": 2016,
      "month": 7,
      "value": 0
    }
  ],
  PassionAssets: [
    {
      "year": 2016,
      "month": 4,
      "value": 0
    },
    {
      "year": 2016,
      "month": 5,
      "value": 0
    },
    {
      "year": 2016,
      "month": 6,
      "value": 0
    },
    {
      "year": 2016,
      "month": 7,
      "value": 0
    }
  ]
}

const returnExpectedArray = (wealthByDistribution) => {
    const expectedArray = []
    return expectedArray
}

const expectedArray = [
    {
      "year": 2016,
      PassionAssets: 0,
      Loan: 0,
      InvestmentInsurance: 0,
      InvestmentAccount: 0,
      CheckingAccount: 10,
      Company: 0,
      "month": 4,
      "value": 0
    },
    {
      "year": 2016,
      PassionAssets: 0,
      Loan: 0,
      InvestmentInsurance: 0,
      InvestmentAccount: 0,
      CheckingAccount: 0,
      Company: 0,
      "month": 5,
      "value": 0
    },
    {
      "year": 2016,
      PassionAssets: 0,
      Loan: 0,
      InvestmentInsurance: 0,
      InvestmentAccount: 0,
      CheckingAccount: 0,
      Company: 0,
      "month": 6,
      "value": 0
    },
    {
      "year": 2016,
      PassionAssets: 0,
      Loan: 0,
      InvestmentInsurance: 330,
      InvestmentAccount: 220,
      CheckingAccount: 0,
      Company: 110,
      "month": 7,
      "value": 0
    }
]

请如果有人可以帮助我，我已经尝试解决它很长一段时间了。 我尝试了以下代码，但没有按预期工作。

const wealthByDistributionKeys = Object.keys(wealthByDistribution);
const [ key, ...rest ] = wealthByDistributionKeys;
const firstArray = wealthByDistribution[key] || [];

const expectedArray = firstArray.map((item, i) => {
    item[key] = item.value;
    return Object.assign({}, item, ...rest.map(r => {
        wealthByDistribution[r][i][r] = wealthByDistribution[r][i].value;
        return wealthByDistribution[r][i];
    }));
});

Answer 1

通过使用相应的键，您可以收集年/月的所有值并获得组合结果。

 const wealthByDistribution = { CheckingAccount: [{ year: 2016, month: 4, value: 10 }, { year: 2016, month: 5, value: 0 }, { year: 2016, month: 6, value: 0 }, { year: 2016, month: 7, value: 0 }], Company: [{ year: 2016, month: 4, value: 0 }, { year: 2016, month: 5, value: 0 }, { year: 2016, month: 6, value: 0 }, { year: 2016, month: 7, value: 110 }], InvestmentAccount: [{ year: 2016, month: 4, value: 0 }, { year: 2016, month: 5, value: 0 }, { year: 2016, month: 6, value: 0 }, { year: 2016, month: 7, value: 220 }], InvestmentInsurance: [{ year: 2016, month: 4, value: 0 }, { year: 2016, month: 5, value: 0 }, { year: 2016, month: 6, value: 0 }, { year: 2016, month: 7, value: 330 }], Loan: [{ year: 2016, month: 4, value: 0 }, { year: 2016, month: 5, value: 0 }, { year: 2016, month: 6, value: 0 }, { year: 2016, month: 7, value: 0 }], PassionAssets: [{ year: 2016, month: 4, value: 0 }, { year: 2016, month: 5, value: 0 }, { year: 2016, month: 6, value: 0 }, { year: 2016, month: 7, value: 0 }] }, result = Object.values(Object.entries(wealthByDistribution).reduce((r, [k, a]) => { a.forEach(({ year, month, value }) => { const key = [year, month].join('|'); r[key]??= { year, month }; r[key][k] = value; }); return r; }, {}) ); console.log(result);

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