每当用户尝试从我的网站使用Facebook登录时，都会获得facebook登录弹出窗口

Question

I am trying to implement Facebook login on my website as part of authentication and using Facebook JavaScript SDK for that.

used a simple code as

window.fbAsyncInit = function() {
FB.init({ appId: 'xxxxxxxxxxxxx', //change the appId to your appId
    status: true, 
    cookie: true,
    xfbml: true,
    oauth: true});

function updateButton(response) 
{       
    if (response.status === 'connected') 
    {
        $('#fb-auth').on('click',function(){
            FB.api('/me', function(info) {
                login(response, info);
            });


            //FB.logout(function(response) {
                //logout(response);
            //});
        });
    }
    else 
    {
        $('#fb-auth').on('click',function(){
            FB.login(function(response) {
                if (response.authResponse) {
                    FB.api('/me', function(info) {
                        login(response, info);
                    });    
                } 
                else {
                    ;
                }
            }, {scope:'email,user_birthday,status_update,publish_stream,user_about_me'});   
        });
    }
}
FB.getLoginStatus(updateButton);
//FB.Event.subscribe('auth.statusChange', updateButton);  
};    

Facebook login works fine but what I am trying to do is when next time they try Login with Facebook , they should get login pop-up and option to login as another user.

After first login , next time when they are trying to login with facebook again and they are logged into facebook in another tab its just redirecting them to logged in page without any pop-up or anything.

Can anyone please give me some pointer as what need to be done to achieve that.

Answer 1

If you want to login the user everytime he visits the app, you should implement FB.logout , when you get the status as connected on getLoginStatus() when the app starts.

So the session when be destroyed and then you can call FB.login again. Just like-

// app starts here
FB.getLoginStatus()
{
    if(status == "connected")

        // call FB.logout()
        // call FB.login()

    else

        // call FB.login()

 }