Javascript - Object return itself -

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• how “this” keyword work? 18 answers

i have object , want print value console:

var pagestatistics = function (page) {  var myfunctionname = function ()     {       //some logic of operation        //i want print console current object state see if logic works       console.log(this);     } } 

but when looking @ console see "window" window's details, instead of object of pagestatistics.

how can return current instance of pagestatistics ?

update: added real code code gets response facebook api query calculate statistics page's behaviour:

var pagestatistics = function (page) {     var numberofposts = 0;     var numberoflikes = 0;     var numberofcomments = 0;     var numberofshares = 0;     var bestpostid = 0;     var bestpostlikes = 0;     var bestpostcomments = 0;     var bestpostshares = 0;     var bestposttotalengagement = 0;      this.onfacebookdataloaded = function (posts) {         var data = posts["data"];         console.log(posts);         (var = 0; < data.length; i++) {             var post = data[i];             var postids = post["id"].split("_");             var postid = postids[1];             //todo add feature excluding array of posts              numberofposts++;             var likes = 0;             var comments = 0;             var shares = 0;             if (isvariableexists(post["likes"]) && isvariableexists(post["likes"]["summary"]) && isvariableexists(post["likes"]["summary"]["total_count"]))                 likes = post["likes"]["summary"]["total_count"];             if (isvariableexists(post["comments"]) && isvariableexists(post["comments"]["summary"]) && isvariableexists(post["comments"]["summary"]["total_count"]))                 comments =post["comments"]["summary"]["total_count"];             if (isvariableexists(post["shares"]) && isvariableexists(post["shares"]["count"]))                 shares = post["shares"]["count"];             numberoflikes += likes;             numberofcomments += comments;             numberofshares += shares;             totalengagement = likes + comments + shares;             if (bestposttotalengagement < totalengagement)             {                 bestpostid = post["id"];                 bestpostlikes = likes;                 bestpostcomments = comments;                 bestpostshares = shares;                 bestposttotalengagement = totalengagement;             }         }         //if results have next page - set path take there         if (isvariableexists(posts["paging"]) && isvariableexists(posts["paging"]["next"]))         {             var next = posts["paging"]["next"];             var pos = next.indexof("/posts");             var path = page.id + next.substr(pos);             //here need send function instance continue update             facebookmanager.getpagestatistics(page,this,path);         }        //here want check have gathered far.         console.log(this);     }      /**      * check if variable exists      * @param variable variable check      * @returns {boolean} true if exists, false otherwise      */     var isvariableexists = function (variable) {         if (typeof variable !== 'undefined')             return true;         return false;     }  } 

i think looking somethink

    var pagestatistics = function (page) {     this.myvariablename = '';     var mysecondvariable = '';     this.myfunctionname = function ()     {         //some logic of operation         this.myvariablename = 'something';         mysecondvariable = 'second something';         //now return refrence of myvariablename variable , myfunctionname function, not of mysecondvariable         console.log(this);     } }  var test = new pagestatistics(); test.myfunctionname();