为什么auth.logout在auth.login后调用？ [英] Why auth.logout is called after auth.login?

问题描述

在FB init之后我有这个代码：

  FB.Event.subscribe（'auth.login'，function ）{
 alert（login）; 
}）; 
 FB.Event.subscribe（'auth.logout'，function（response）{
 alert（logout）; 
}）; 
  

但是我注意到，在登录后，输出首先是注销，而不是登录 。为什么？我不会看到注销。

解决方案

请勿盲目地使用回调，因为Facebook在其示例中显示，忽略响应值。即使没有执行该操作，Facebook也会调用这些事件。这就是为什么他们给你响应变量。

你应该看看响应变量的属性的值，然后再决定要做什么。 b $ b

I have this code after FB init :

FB.Event.subscribe('auth.login', function(response) {
    alert("login");
});
FB.Event.subscribe('auth.logout', function(response) {
    alert("logout");
});

but I notice that, after logged in, the output is "logout" first, than "login". Why? I won't to see "logout".

解决方案

Please don't blindly use the callback as Facebook shows in their examples and ignore the response value. Facebook will call the events even though that action really wasn't performed. That's why they give you the "response" variable.

You should look at the value of the properties of the response variable before deciding what to do.

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