遇到的前端ts语法问题记录

const cities = ref([]);

//List转指定字段为数组

const getRoomList = async () => {

　　  const res = await listRoom(roomData);

 　　 roomList.value = res.rows;

　　  const arr_names = roomList.value.map(item => item.roomName).toString().split(',');

  　　cities.value=arr_names;

}

 

或者for循环添加array数组

const getRoomList = async () => {

  const res = await listRoom(roomData); 

  var arr_names:string[]=new Array(roomList.value.length);

  for(var i=0;i<roomList.value.length;i++)

  {

    arr_names[i]=roomList.value[i].roomName;

  }

}