利用当前数组生成一个新的数组

    var newArr = [];
        this.orderArr.map(function(item,index){
          var newObj = {};
          newObj[‘groupId‘] = item.group_id;
          newObj[‘labelId‘] = item.isSelect;
          newArr[index] = newObj
        })
        console.log(newArr,‘newArr‘)
        this.labelMap = newArr   //newArr就是一个新的状态