jquery FB.api function

Question

I would like to get the post insights for every post in my feed. I can't to pass the parameters from the function. This is the code:

function load_post(page_id, tok)
  {      
  var data = { 
               access_token : tok,
              };
  FB.api("/" + page_id + "/feed?fields=id,name",'get',data ,function (response) {
    if (response && !response.error) {  
        console.log(response);
        for (var i = 0; i < response.data.length; i++) {

           var r = "";
           (function(post_id, data, r) {
              FB.api("/" + post_id + "/insights/post_impressions",'get',data ,function (response_insight) {  
                r = response_insight.data[0].values[0].value;
              });
           })(response.data[i].id, data, r);

           alert(r);
        }
     }

   });
}

I don't know where is the error. I'm new in jquery/javascript and I think is a function problem. Can you help me? Thanks a lot.

PS: my goal is to take response_insight.data[0].values[0].value value

this is the response_insight response:

data: Array[1]
0: Object
    description: "Lifetime: The number of impressions of your Page post. (Total Count)"
    id: "my_id_post/insights/post_impressions/lifetime"
    name: "post_impressions"
    period: "lifetime"
    title: "Lifetime Post Total Impressions"
values: Array[1]
0: Object
value: 676

The problem is that I can't return the response_insight.data[0].values[0].value; from second fb.api function — RoverDar, Jan 07 '16 at 12:02
console.log(response_insight.data[1].values[1].value); try this — msvairam, Jan 07 '16 at 12:11
I get an error: Uncaught TypeError: Cannot read property 'values' of undefined. The insight metric "post_impressions/lifetime" return a single array dimension I think. — RoverDar, Jan 07 '16 at 12:14
My question is: how can I pass the r variable from the second and first function? — RoverDar, Jan 07 '16 at 12:15
It doesn't works. I had put "return r" after "r = response_insight.data[0].values[0].value;" — RoverDar, Jan 07 '16 at 12:19
console.log( response_insight.data[0].values[0].value); then what happen ? — msvairam, Jan 07 '16 at 12:25
I get a value (676). The problem is that I'm into FB.api "/feed" and I do the loop. For each loop I call FB.api "insights" because I would like to get the response_insight.data[0].values[0].value. — RoverDar, Jan 07 '16 at 12:29
add the return r; and what return console.log(load_post()); code in outside of function — msvairam, Jan 07 '16 at 12:31
_“The problem is that I can't return the response_insight.data[0].values[0].value; from second fb.api function”_ – if that’s your main problem here, then this question is basically a duplicate of http://stackoverflow.com/q/14220321/1427878 — CBroe, Jan 07 '16 at 12:42

jquery FB.api function

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