Retrieve feed from facebook - sdk 4.0

      window.fbAsyncInit = function() {
           FB.init
                ({
                    appId   : 'APP-ID',
                    status  : true, // check login status
                    cookie  : true, // enable cookies to allow the server to access the session
                    xfbml   : true, // parse XFBML
                    version: 'v2.2'
                });
                FB.Event.subscribe('auth.login', function()
                {
                    window.location.reload();
                });

          FB.getLoginStatus(function(response) {
              if (response.status === 'connected') {
                console.log('Logged in.');
                var uid = response.authResponse.userID;
                var accessToken = response.authResponse.accessToken;

               if(typeof facebookInit !== 'undefined')
                      facebookInit();
              }
              else {
                FB.login(function (response) {
                    if (response.authResponse) {
                      // some code here

                    } else {
                      alert("Login attempt failed!");
                    }
                  } //, { scope: 'read_stream' } // do I need to use scope here?
        );;
               }
            });
        };

      (function(d, s, id){
         var js, fjs = d.getElementsByTagName(s)[0];
         if (d.getElementById(id)) {return;}
         js = d.createElement(s); js.id = id;
         js.src = "//connect.facebook.net/en_US/sdk.js";
         fjs.parentNode.insertBefore(js, fjs);
       }(document, 'script', 'facebook-jssdk'));


function facebookInit() {

    FB.api('/PAGE-ID/feed', function(response) {
       console.log(response); // the returned array is empty
});


}