遍历数组对象,根据已知信息找到对应的对象

getIdByPoint(lng,lat,fromData){
    let areaId="";
    for(let item in fromData){
        if(fromData[item].lat==lat && fromData[item].lng==lng){
          console.log('找到了');
          areaId=fromData[item].id;
          console.log("areaId: "+areaId)
          return areaId;
        }
    }
    return areaId;
},