vue監(jiān)聽(tīng)關(guān)閉頁(yè)面 在關(guān)閉頁(yè)面前發(fā)送axios請(qǐng)求 如何先發(fā)送請(qǐng)求 再關(guān)閉頁(yè)面

現(xiàn)在碰到的問(wèn)題就是關(guān)閉頁(yè)面時(shí)axios請(qǐng)求總提交不了，請(qǐng)問(wèn)有什么解決的方法么？

        window.addEventListener('beforeunload', function() {
      beforeUnloadTimestamp = new Date().getTime();
  })

  window.addEventListener('unload', function() {
    beforeUnloadTimestamp = beforeUnloadTimestamp || 0;
    localStorage.setItem('onload', new Date().getTime());
    // 測(cè)試chrome和ie11 得出，chrome，IE11 // 刷新時(shí) chrome >=11ms ，ie11 >=2ms 左右， 在關(guān)閉時(shí)，chrome間隔在 >=2ms，IE11 >=3000ms
    if (isIE) {
      if (new Date().getTime() - beforeUnloadTimestamp > 500) {
        isClose = true;
      }
    } else {
      if (new Date().getTime() - beforeUnloadTimestamp < 5) {
        isClose = true;
      }
    }
    
    if (isClose) {
      axios.get('/au/logout').then(res => {
        window.sessionStorage.clear();
      });
      localStorage.setItem('close', new Date().getTime());
    }else{
      localStorage.setItem('refresh', new Date().getTime());
    }
  })