javascript - Facebook like button redirect even after liked -

i using edge create function got question facebook button redirect?

fb.event.subscribe('edge.create',     function(response) {         location.href = 'http://yourdomain.com/post/id';     } ); 

so code working - page liked , redirect page,

but seems function when user haven't liked page

when user liked page, button "in liked state" , still want user redirect when click button

is there function still?

or how can check if user liked page, maybe in way can display button have redirect onclick them