FB.logout（）不注销Facebook用户

Question

I have implemented Login with Facebook successfully and now trying to implement logout option.

Included script https://connect.facebook.net/en_US/all.js

Invoked JavaScript FB.logout(); as per https://developers.facebook.com/

But I see Facebook session still active and user is not requested for Facebook userid and password on hitting "Login with Facebook" or on Facebook website.

How to test FB.logout() is working or not. From the above behavior FB.logout() is not working.

Answer 1

There is a bug in Facebook's javascript-sdk [ Bug Link ]

It explains that if your have checked the Block third-party cookies and site data , the sdk will not be able to log the user out since the cookies remain in your browser. It says,

When you call FB.logout we check that Facebook cookies are set for Facebook.com and delete them if they are. However, when third-party cookies are disabled we're not able to check that the cookies exist and we can't delete them.

So as a workaround you can use the below code,

FB.logout(function(response) {
  FB.Auth.setAuthResponse(null, 'unknown');
  ...
});