Javascript 如何按包含字符串的数组对象分组

我有一个数组

[<br>
  &nbsp;{CONTRACT_ID: 420, DEDUCTIONS: "Warehouse Fixture - Generic Double", AMOUNT: 600} <br>
  &nbsp;{CONTRACT_ID: 420, DEDUCTIONS: "Warehouse Fixture - Rack", AMOUNT: 750} <br>
  &nbsp;{DEDUCTIONS: "Freight Incoming", AMOUNT: 10, RATE:2} <br>
  &nbsp;{DEDUCTIONS: "Freight Outgoing", AMOUNT: 30, RATE:2} <br>
  &nbsp;{DEDUCTIONS: "Warehouse", AMOUNT: 500} <br>
]

[

{合同编号：420，扣除额：“仓库固定装置-通用双联”，金额：600}

{合同编号：420，扣除额：“仓库固定装置-货架”，金额：750}

{扣除额：“货物进货”，金额：10，费率：2}

{扣除额：“运费出库”，金额：30，费率：2}

{扣除额：“仓库”，金额：500}

]

这就是我想要的结果：

[<br>
  &nbsp;{DEDUCTIONS: "Warehouse Fixture", AMOUNT: 1350} <br>
  &nbsp;{DEDUCTIONS: "Freight", AMOUNT: 40} <br>
  &nbsp;{DEDUCTIONS: "Warehouse", AMOUNT: 500} <br>
]

[

{扣除额：“仓库固定装置”，金额：1350}

{扣除额：“运费”，金额：40}

{扣除额：“仓库”，金额：500}

]

---

这可能吗？

对于本例，下面的代码很好，但您需要定义更具体的分组逻辑

const indexedResult = {};

initialArray.forEach(obj => {
  let key;

  if ("CONTRACT_ID" in obj) {
    key = obj.DEDUCTIONS.split(/ - /, 1)[0];
  } else if ("RATE" in obj) {
    key = obj.DEDUCTIONS.split(/ /, 1)[0];
  } else {
    key = obj.DEDUCTIONS;
  }

  if (key in indexedResult) {
    indexedResult[key].AMOUNT += obj.AMOUNT;
  } else {
    indexedResult[key] = {
      DEDUCTIONS: key,
      AMOUNT: obj.AMOUNT
    };
  }
});

const result = Object.keys(indexedResult).map(key => indexedResult[key]);

---

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