$http({
    method: "GET",
    url: "https://graph.facebook.com/oauth/access_token?client_id=xxx&client_secret=yyy&grant_type=client_credentials",
}).then(function (response) {
    var accessToken = response.data.access_token;
    $http({
        method: "GET",
        url: "https://graph.facebook.com/zzz/feed?" +
        "fields=attachments{subattachments},message,link,created_time,full_picture&limit=8&access_token=" + accessToken,
    }).then(function (response) {
        var dailyData = http://www.mamicode.com/response.data.data.reduce(function (result, data) {>