Question

关于下面的代码，是什么原因导致我通过completeLogin（）函数成功重定向的页面不断重新加载自身？

更多背景 -

用户可以通过Facebook登录我的应用程序。在用户按下按钮以启动该功能并通过Facebook成功进行身份验证后，我便希望启动登录的页面以及从Facebook接收成功登录信息的页面重定向到另一个用户，然后用户可以完成我的申请的注册过程。正如我上面提到的，页面确实被重定向到我需要它的位置。

页面继续重新加载，因为我知道有些东西正在被立即调用，我需要知道如何阻止它。

非常感谢， CM

<script>
  // Called with the results from FB.getLoginStatus().
  function statusChangeCallback(response) {
  console.log('statusChangeCallback');
  console.log(response);

// The response object returns with a status field that lets the
// app know the current login status of the person.

    if (response.status === 'connected') {
  // User is logged into your app and Facebook.
    console.log("You are connected.");
    completeLogin();
    console.log("completeLogin called")
  testAPI();
} else {
  // The person is not logged into your app or we are unable to tell.
  document.getElementById('status').innerHTML = 'Please log ' +
'    into this app.';
}
  }

  // This function is called when someone finishes with the Login
  // Button.  See the onlogin handler attached to it in the sample
 // code below.
  function checkLoginState() {
    FB.getLoginStatus(function(response) {
      statusChangeCallback(response);
    });
  }

function completeLogin()
 { location.href = '@Url.Action("ExternalLoginConfirmation", "Account")'; }

  window.fbAsyncInit = function() {
  FB.init({
  appId: '1614609378567893',
  cookie     : true,  // enable cookies to allow the server to access
                // the session
  xfbml      : true,  // parse social plugins on this page
  version    : 'v2.8' // use graph api version 2.8
});


   // FB.getLoginStatus() gets the state of the
  // person visiting this page and can return one of three states to
  // the callback provided:
  //
  // 1. Logged into your app ('connected')
  // 2. Logged into Facebook, but not your app ('not_authorized')
  // 3. Not logged into Facebook and can't tell if they are logged into
   //    your app or not.
  //
  // handles these three cases in the callback function.

  FB.getLoginStatus(function(response) {
    statusChangeCallback(response);
   });

  };

  // Load the SDK asynchronously
  (function(d, s, id) {
    var js, fjs = d.getElementsByTagName(s)[0];
    if (d.getElementById(id)) return;
    js = d.createElement(s); js.id = id;
    js.src = "//connect.facebook.net/en_US/sdk.js";
    fjs.parentNode.insertBefore(js, fjs);
   }(document, 'script', 'facebook-jssdk'));

  // Running a simple test of the Graph API after login is
  // successful.  
  function testAPI() {
    console.log('Welcome!  Fetching your information.... ');
    FB.api('/me', function(response) {
        console.log('Successful login for: ' + response.name);
      document.getElementById('status').innerHTML =
        'Thanks for logging in, ' + response.name + '!';
    });
  }
    </script>

Answer 1

以下代码导致页面重新加载：

location.href = '@Url.Action("ExternalLoginConfirmation", "Account")';

location是窗口上的变量，它始终在范围内。更改此值会触发用户代理转到您将href属性设置为的地址。这类似于window.location重定向

window.location = "http://www.google.com";

在这些情况下，只需开始删除代码段/代码行，直到它停止不可预测的行为为止。

无限循环（Page Reload）蓝调

1 个答案: