在microsoft teams自定义应用程序中获取iframe中加载的最后一个url

microsoftTeams.initialize();

// 获取身份验证令牌
microsoftTeams.authentication.authenticate({
  url: window.location.origin + '/auth.html',
  width: 600,
  height: 535,
  successCallback: function (result) {
    // 调用 REST API 获取会话信息
    microsoftTeams.getContext(function (context) {
      var conversationId = context['conversation']['id'];

      // 发起 REST API 请求
      var xhr = new XMLHttpRequest();
      xhr.open('GET', 'https://graph.microsoft.com/v1.0/me/onlineMeetings/' + conversationId, true);
      xhr.setRequestHeader('Authorization', 'Bearer ' + result.accessToken);
      xhr.onreadystatechange = function () {
        if (xhr.readyState === 4 && xhr.status === 200) {
          var response = JSON.parse(xhr.responseText);
          var lastUrl = response['lastUrl'];

          // 在控制台输出 iframe 中加载的最后一个 URL
          console.log('Last URL in iframe:', lastUrl);
        }
      };
      xhr.send();
    });
  },
  failureCallback: function (reason) {
    console.log('Authentication failed:', reason);
  }
});