jquery FB.api函数

Question

我想获取Feed中每个帖子的帖子洞察信息。我无法从函数中传递参数。这是代码：

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);
        }
     }

   });
}

我不知道错误在哪里。我是jquery / javascript的新手，我觉得这是一个功能问题。你能帮助我吗？非常感谢。

PS：我的目标是采取response_insight.data [0] .values [0] .value value

这是response_insight响应：

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