comparing friends got from `taggable_friends` with `friends`

check_my_fb_friends.js

FB.getLoginStatus(function (response) {
    if (response.status === 'connected') {
        console.log('already logged into facebook');
        FB.api('/', 'POST', {
            batch:[
                {method: 'GET', relative_url: '/me?fields=birthday,name,email,gender,age_range,first_name,last_name&locale=en_US'},
                {method: 'GET', relative_url: '/me/taggable_friends?fields=name,first_name,last_name,picture.width(400).height(400)&locale=en_US'},
                {method: 'GET', relative_url: '/me/friends?limit=0&locale=en_US'}
            ],
            include_headers: false
        }, function(response_array){
            if (response_array && !response_array.error) {
                var my_response = JSON.parse(response_array[0].body);
                if (my_response && ! my_response.error) {
                    console.log('I\'m ' + my_response.name);
                    console.log('My fbid is ' + FB.getUserID());
                }
                else {
                    console.log('my data is unavailable');
                }

                var taggable_friends_response = JSON.parse(response_array[1].body);
                if (taggable_friends_response && ! taggable_friends_response.error) {
                    console.log('I\'ve got ' + taggable_friends_response.data.length + ' friends in taggable_friends.');
                    var friends_arr = [];
                    for (var i = 0; i < taggable_friends_response.data.length; i++) {
                        friends_arr.push(taggable_friends_response.data[i].name)
                    }
                    console.log('They are: ');
                    console.log(friends_arr);
                }
                else {
                    console.log('friends data is unavailable');
                }

                var friends_response = JSON.parse(response_array[2].body);
                if (friends_response && ! friends_response.error) {
                    console.log('My real friends count is ' + friends_response.summary.total_count);
                }
                else {
                    console.log('friends data is unavailable');
                }
            }
            else{
                console.log('batch request failed');
            }
        });
    }
    else {
        console.log('user is not logged in.')
    }
});