Question

使用Facebook Javascript SDK时出现错误FB not defined

FB.init({
    appId: '{APP ID}',
    status: true,
    cookie: true,
    xfbml: true
});

Jsfiddle

Answer 1

两件事 -

我无法看到JS SDK已加载。
您必须在异步加载SDK后调用FB函数，否则会抛出FB is not defined

所以，要解决它 -

// This will be triggered automatically after the SDK is loaded successfully
// write your FB fucntions inside this
window.fbAsyncInit = function() {
   FB.init({
     appId: '{app-id}',
     status: true,
     cookie: true,
     xfbml: true
   });

   FB.getLoginStatus(function (response) {
     if (response.status === 'connected') {
        GetData();
     } else {
        Login();
     }
  });
};

// JS SDK - this will be loaded 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/all.js";
  fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));

function Login() {
   ...
   ...
}

function GetData() {
   ...
   ...
}

Reference

修改

我看到你要求获得许可email但尚未使用它。使用实际的电子邮件（而不是facebook）与 - response.email

Facebook Javascript SDK FB未定义

1 个答案: