数组转字符串

初始：

    [
      {
        index:'1',
        freqTX:'x1',
        freqRX:'y1',
      },
      {
        index:'2',
        freqTX:'x2',
        freqRX:'y2',
      },
      {
        index:'3',
        freqTX:'x3',
        freqRX:'y3',
      },
    ]

最终：

{
  freqTX:'x1,x2,x3',
  freqRX:'y1,y2,y3',
}

方法：

    function convert (arr){
        const obj = {};
        arr.map(item=>{
            if (obj.freqRX){
                obj.freqTX += ','+item.freqTX;
                obj.freqRX += ','+item.freqRX;
            } else {
                obj.freqTX = item.freqTX;
                obj.freqRX = item.freqRX;
            }
        })
        return obj;
    }

字符串转数组

初始：

{
  freqTX:'x1,x2,x3',
  freqRX:'y1,y2,y3',
}

最终：

    [
      {
        freqTX:'x1',
        freqRX:'y1',
      },
      {
        freqTX:'x2',
        freqRX:'y2',
      },
      {
        freqTX:'x3',
        freqRX:'y3',
      },
    ]

方法：

      const freqTX0= data.freqTX.split(',');
      const freqRX0= data.freqRX.split(',');
      const dataSource0 = [];
      for (let i=0; i<freqTX.length; i++) {
        dataSource0.push({
          freqTX:reqTX0[i],
          freqRX:freqRX0[i],
        });
      }
    console.log(dataSource0);

对象去重、重新命名key

初始：

// 将value1作为新obj的value，value2作为新obj的key，去除重复
     {
        value1:'1,2,12,13,6,4,5,11,22,23,9,10,24,25',
        value2:'7,7,8,9,8,7,7,3,14,3,3,3,10,10',
     }

最终：

    {
        8:'1,5,16,22,8',
        1:'2,6',
        6:'3,7',
        7:'4,9,10',
        15:'99,96',
        11:'11,22,23',
        12:'25,26',
    }

方法：

    function convert (obj){
        var sector = obj.sector.split(',');
        var nodeid = obj.nodeid.split(',');
        var obj1 = {};
        for(var i=0; i <nodeid.length; i++) {
            var sector1 = sector[i];
            var nodeid1 = nodeid[i];
            if (obj1[sector1]){
                obj1[sector1] += ','+nodeid1;
            } else {
                obj1[sector1]= nodeid1;
            }
        }
        return(obj1);
    }