数组对象中相同的参数拼接成一个对象

Posted 2022-01-08 晚星@

//原始数组
    let _arr = [
       key: '1', name: '1', datas: [111] ,
       key: '1', name: '1', datas: [112] ,
       key: '1', name: '2', datas: [121] ,
       key: '1', name: '3', datas: [131] ,
       key: '2', name: '1', datas: [211] ,
       key: '2', name: '1', datas: [212] ,
       key: '2', name: '2', datas: [221] ,
       key: '3', name: '1', datas: [311] ,
       key: '3', name: '2', datas: [321] ,
       key: '3', name: '2', datas: [322] ,
       key: '3', name: '2', datas: [323] ,
       key: '3', name: '2', datas: [324] ,
       key: '3', name: '3', datas: [331] ,
    ]
    let tempKeyArr = [];
    var flag = false
    var flagCount = 0
    let tempKeyName = [];
    let tempDataArr = [];
    let detailDatas = []
    for (let i = 0; i < _arr.length; i++) 
      flag = false
      flagCount = 0
      if (i == 0) 
        tempDataArr.push(
          key: _arr[i].key,
          name: _arr[i].name,
          datas: _arr[i].datas
        );
        tempKeyArr.push(_arr[i].key);
        tempKeyName.push(_arr[i].name);
       else 
        for (let k = 0; k < tempKeyArr.length; k++) 
          if (tempKeyArr[k] != _arr[i].key || tempKeyName[k] != _arr[i].name) 
            flagCount++
          
        
        if (flagCount == tempKeyArr.length) 
          tempDataArr.push(
            key: _arr[i].key,
            name: _arr[i].name,
            datas: _arr[i].datas
          );
          tempKeyArr.push(_arr[i].key);
          tempKeyName.push(_arr[i].name);
         else 
          for (let j = 0; j < tempDataArr.length; j++) 
            if (tempDataArr[j].key == _arr[i].key && tempDataArr[j].name == _arr[i].name) 
              _arr[i].datas.map(item => 
                tempDataArr[j].datas.push(item);
              )
            
          
        
      
    
    detailDatas = tempDataArr
    console.log(detailDatas);