找出相同属性值的对象 累加数量 汇总

找出相同属性值的对象 累加数量 汇总

 const oldArray = [
      {
    
        batchNo: "1",
        factoryCnName: "苹果",
        goodsCnName: "pingguo",
        inputNum: 1,
      },
      {
    
        batchNo: "1",
        factoryCnName: "苹果",
        goodsCnName: "pingguo",
        inputNum: 3,
      },
      {
    
        batchNo: "1",
        factoryCnName: "梨子",
        goodsCnName: "lizi",
        inputNum: 3,
      },
      {
    
        batchNo: "1",
        factoryCnName: "梨子",
        goodsCnName: "lizi",
        inputNum: 3,
      },
      {
    
        batchNo: "2",
        factoryCnName: "苹果",
        goodsCnName: "pingguo",
        inputNum: 3,
      },
    ];
    const sumTabData = countTabFun(oldArray);

//汇总数据
export function countTabFun(arr) {
    
  const data = arr.reduce((total, cur, index) => {
    
    let hasValue = total.findIndex((current) => {
    
      return (
        current.batchNo == cur.batchNo &&
        current.factoryCnName == cur.factoryCnName &&
        current.goodsCnName == cur.goodsCnName
      );
    });
    hasValue == -1 && total.push(cur);
    hasValue != -1 &&
      (total[hasValue].inputNum = total[hasValue].inputNum + cur.inputNum);
    return total;
  }, []);
  return data;
}