如何使用jquery登录Facebook用户后检索数据

我更改了脚本。这是我的代码。 在控制台中，我得到了未捕获的引用错误：未定义基本URL。我不知道为什么它会显示。我应该在这里改变什么。我需要将数据传递给控制器，但它不起作用。任何人都可以帮助我的错误是什么。

  <script>
       function testAPI() {
       console.log('Welcome!  Fetching your information.... ');
       var url = '/me?fields=name,email,link';
      FB.api(url, function (response) {
      console.log(response);
      var imgUrl = 'http://graph.facebook.com/' + response.id + '/picture/?                type=large';
         localStorage.setItem("fbImg", imgUrl);
     var fbId = response.id;
    var fbName = response.name;
      var fbEmail = response.email;
     $.ajax({
     url: '<?php echo url('facebooklogin'); ?>',
     type: 'POST',
     data: {facebookId: fbId, username: fbName, email: fbEmail},
    success: function (message)
    {
    console.log(message);
    console.log('good');
    console.log(message.success);
    if (message.success == 1)
    {
    //location.reload();
     //window.location.href = '<?php echo url('babyname/create'); ?>';
    }
    if (message.success == 2)
    {
    location.reload();
    }
    }
    });
   });
    }
  var csrf = '';
  function statusChangeCallback(response) {
  console.log(response);
 if (response.status === 'connected') {
 getFBDetails(response);
  } else if (response.status === 'not_authorized') {
  var c = 'Please log ' + 'into this app.';
  console.log(c);
  } else {
  var c = 'Please log ' + 'into Facebook.';
 console.log(c);
  }
  }
 function checkLoginState() {
 FB.getLoginStatus(function (response) {
 statusChangeCallback(response);
 });
 }
   window.fbAsyncInit = function () {
  };
// 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'));
// Here we run a very simple test of the Graph API after login is
 // successful.  See statusChangeCallback() for when this call is made.
 function getFBDetails(resObj) {
 console.log('Welcome!  Fetching fb information.... ');
  FB.api('/me', {locale: 'en_US', fields: 'name, first_name, last_name,  gender, email'}, function (response) {
  var c = 'Thanks for logging in, ' + response.name + ', ' + response.email + ', ' + resObj.authResponse.accessToken;
//document.getElementById('status').innerHTML = c;
  console.log(c);
  console.log(response);
  console.log(resObj.authResponse.accessToken);
  testAPI();
  });
  }
function fb_login() {
FB.init({
appId: '1694320824153828',
    cookie: true,
    xfbml: true,
    version: 'v2.5',
    status: true,
     });
     FB.login(function (response) {
     FB.getLoginStatus(function (response) {
     statusChangeCallback(response);
     });
     }, {scope: 'public_profile,email'});
     }
     </script>