javascript - Facebook redirect if not logged in -


i'm using facebook auth , i'm trying add automatic redirect interior pages log in page if user not logged in or haven't authorized app, , part works fine. problem i'm having when arrive on index.php, redirects index.php again, , again, infinitely. i've tried numerous things, if (location.href == "index.php") nothing, else redirect, nothing try works. 

fb.getloginstatus(function(response) { if (response.status === 'connected') {     var uid = response.authresponse.userid;     var accesstoken = response.authresponse.accesstoken;   } else if (response.status === 'not_authorized') {     window.location = "index.php";   } else {     window.location = "index.php";   } });


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