包含axios调用的for循环中async await的正确行为是什么？

• 最核心的问题是getMeetingAgenda函数没有显式返回请求结果：你在.then()回调里写的return response.data.agenda仅作用于回调函数本身，整个async函数没有将这个结果向外返回，所以await getMeetingAgenda()拿到的永远是undefined。
• 你之前猜测的for循环没有等待的问题不存在：普通for循环内的await会按顺序阻塞执行，从你打印的日志顺序（先打印getMeetingAgenda内的议程，再打印getDesiredRecordings内的ID日志）也能验证等待逻辑是生效的。
• 额外的逻辑瑕疵：你把getMeetingAgenda的调用写在if判断外的三元运算符里，可能会给无效的会议ID也在meetingAgendas里生成值为undefined的键，属于冗余逻辑。

1. 修正getMeetingAgenda的返回逻辑，同时统一异步写法（不要混用await和.then，避免逻辑混乱） #

async function getMeetingAgenda(meetingId, config) {
  console.log(meetingId)
  try {
    const response = await axios.get(`${Zoom_Agenda_End_Point}${meetingId}`, config)
    console.log(response.data.agenda);
    return response.data.agenda;
  } catch(e) {
    console.log("Axios error occured in getMeetingAgenda: ",e);
    return "";
  }
}

如果你还是想用.then的写法，直接return整个axios请求即可：

async function getMeetingAgenda(meetingId, config) {
  console.log(meetingId)
  // 加return把整个Promise的结果向外返回
  return axios.get(`${Zoom_Agenda_End_Point}${meetingId}`, config)
    .then(function (response) {
      console.log(response.data.agenda);
      return response.data.agenda;
    })
    .catch(e=>{
      console.log("Axios error occured in getMeetingAgenda: ",e);
      return "";
    });
}

2. 优化getDesiredRecordings内的调用逻辑，移除冗余的三元运算符 #

async function getDesiredRecordings(recordings, config) {
  try {
    let requiredMeetings = [];
    if (!recordings || !recordings.length) {
      // 修正空值返回结构，和调用处的结构对齐
      return {
        meetingIds: [],
        requiredMeetings: [],
        meetingAgendas: {}
      };
    }
    let meetingIds = [];
    let meetingAgendas = {};
    console.log(config)
    for (let i = 0; i < recordings.length; i++) {
      const currentRecording = recordings[i]
      if (currentRecording && currentRecording.topic && isRecordingValid(currentRecording.topic)) {
        requiredMeetings.push(currentRecording);
        meetingIds.push(currentRecording.id);
        // 仅对有效会议发起请求，避免无效逻辑
        meetingAgendas[currentRecording.id] = await getMeetingAgenda(currentRecording.id,config);
        console.log("getDesiredRecordings ID: ", currentRecording.id, meetingAgendas[currentRecording.id]);
      }
    }
    console.log(meetingAgendas);
    return {
      meetingIds: meetingIds,
      requiredMeetings: requiredMeetings,
      meetingAgendas : meetingAgendas
    };
  }
  catch (e) {
    return Promise.reject(new Error(e));
  }
}

内容的提问来源于stack exchange，提问作者era s'q