Is user logged in facebook is on my page?

Is there posibility, to check, that user on my www is logged in this time in to facebook and get his/her uid number?

I try to use FB.getLoginStatus but I get not开发者_如何学编程hing special ;/

You need to FB.init() with oauth: true and use response.authSession.

https://developers.facebook.com/docs/reference/javascript/FB.init/

https://developers.facebook.com/docs/reference/javascript/FB.getLoginStatus/

Abby