将嵌套的对象数组转换为 JavaScript 或 TypeScript 中数据的特定对象组

Question

我有一个双重嵌套的对象数组，我想更改为特定的组数组以支持我的表结构。

以下是我的对象和我期望的结果。

let newData = {
  data: {
    summary: [
      {
        code: "12",
        data: [
          {
            group: "Trade",
            currency: "CAD", //group1
            amount: "$3,443.00",
            total: 1
          },
          {
            group: "Trade",
            currency: "USD", //group2
            amount: "$0.00",
            total: 0
          },
          {
            group: "Commission",
            currency: "CAD", //group3
            amount: "$0.00",
            total: 0
          },
          {
            group: "Commission",
            currency: "USD", //group4
            amount: "$0.00",
            total: 0
          }
        ]
      },
      {
        code: "34",
        data: [
          {
            group: "Trade",
            currency: "CAD", //group1
            amount: "$343.00",
            total: 21
          },
          {
            group: "Trade",
            currency: "USD", //group2
            amount: "$40.00",
            total: 40
          },
          {
            group: "Commission",
            currency: "CAD", //group3
            amount: "$30.00",
            total: 30
          },
          {
            group: "Commission",
            currency: "USD", //group4
            amount: "$20.00",
            total: 20
          }
        ]
      }
    ]
  }
};



let result = [
{
    code: "12",
    TradeCAD:
    {
            group: "Trade",
            currency: "CAD", //group1
            amount: "$3,443.00",
            total: 1
          },
     TradeUSD:     
           {
            group: "Trade",
            currency: "USD", //group2
            amount: "$0.00",
            total: 0
          },
     CommissionCAD:     {
            group: "Commission",
            currency: "CAD", //group3
            amount: "$0.00",
            total: 0
          },
     CommissionUSD:     {
            group: "Commission",
            currency: "USD", //group4
            amount: "$0.00",
            total: 0
          }

       
  },
  {
    code: "34",
    TradeCAD:
    {
            group: "Trade",
            currency: "CAD", //group1
            amount: "$343.00",
            total: 21
          },
     TradeUSD:     
           {
            group: "Trade",
            currency: "USD", //group2
            amount: "$40.00",
            total: 40
          },
     CommissionCAD:     {
            group: "Commission",
            currency: "CAD", //group3
            amount: "$30.00",
            total: 30
          },
     CommissionUSD:     {
            group: "Commission",
            currency: "USD", //group4
            amount: "$20.00",
            total: 20
          }

       
  },
];

我如何迭代和更改整个对象，如果我确实有大量数据，这是支持更少迭代的最佳方法？

Answer 1

试试这个，看看是否有效。如果你愿意，你可以把代码压缩成一个函数。

const result = newData.data.summary.map(item => {
  const res = {
    code: item.code,
  }
  item.data.forEach(d => {
    res[`${d.group}${d.currency}`] = d;
    d.amount = d.amount || "$0.00"; // default value for amount
    d.total = d.total || 0; // default value for total
  })
  return res;
});
console.log(JSON.stringify(result));