前端JS合并条件相同的对象

piupiu欣

已于 2023-04-11 16:44:04 修改

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文章标签：前端 javascript

于 2023-04-11 16:17:12 首次发布

本文链接：https://blog.youkuaiyun.com/m0_60504233/article/details/130086709

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这段代码将dataList中的对象依据materialLot属性进行分组，如果找到具有相同materialLot的项，则将它们的qty值相加，从而整合数据。

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      dataList: [
      {materialLot: "M230301001",
      materialMoveDetailId: "154ba723-f41f-487c-91d8-b918ca2afd97",
      qty: 2,
      sourceStoreLocation: "A001",
      targetStoreLocation: "LSA11",},
      {materialLot: "M230301001",
      materialMoveDetailId: "154ba723-f41f-487c-91d8-b918ca2afd97",
      qty: 3,
      sourceStoreLocation: "A001",
      targetStoreLocation: "LSA11",},
      {materialLot: "M23030100238",
      materialMoveDetailId: "154ba723-f41f-487c-91d8-b918ca2afd97",
      qty: 2,
      sourceStoreLocation: "A001",
      targetStoreLocation: "LSA11",}
      ]

 this.dataList = this.dataList.map(function(item, index, arr) {
    const i = arr.find(_item => item.materialLot ===  _item.materialLot); //判断条件，如果两个对象的materialLot相等，就让两个对象的数量相加
    if(i !== item) {
        i.qty +=item.qty;
        return undefined;
    } else {
        i.qty = i.qty;
        return i;
    }
}).filter(item => item !== undefined);