facebook - what is response in FB.getLoginStatus -

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to detect facebook user online/offline status use method fb.getloginstatus method. but, paramater("response") mean , come in below code snippet parameter response mean in line " fb.getloginstatus(function(response) "

          fb.getloginstatus(function(response) {             console.log(response);             if (response.status === 'connected') {                  // user logged in , has authenticated                  // app, , response.authresponse supplies                  // user's id, valid access token, signed                  // request, , time access token                   // , signed request each expire                  var uid = response.authresponse.userid;                  var accesstoken = response.authresponse.accesstoken;                  console.log('user logged in , autenticated');               } else if (response.status === 'not_authorized') {                  // user logged in facebook,                   // has not authenticated app                  console.log('user logged in, not autorized');               } else {                  // user isn't logged in facebook.                  console.log('user not logged in');               }        }, true);

you specifying function called when facebook api has completed retrieving response server. passes response object function specify. typical response be: 

{     status: 'connected',     authresponse: {         accesstoken: '...',         expiresin:'...',         signedrequest:'...',         userid:'...'     } }

see facebook javascript docs more info


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