jQuery each loop is not working -

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i put code based off reading other stackoverflow questions , tested in fiddle , works jsfiddle

tried implement in clearfix function in project (at bottom) , cant work. tried putting in numerous places didnt change anything. placed console logs along code see gets , never fires function. want insert clearfix div every 3 divs have class col-md-3.

i'm sure lack of knowledge have wrong. starting learn , piece code together. here code - 

(function () {     'use strict';      window.insta = {          apiurl: 'https://api.instagram.com/v1/users/self/feed?access_token=[token goes here]&callback=?',          grams: {},          init: function () {             $.ajax({                 type: 'get',                 url: insta.apiurl,                 datatype: 'json',                 success: insta.success             });         },          rendergrams: function (grams) {             $.each(grams, function(index, gram) {                 insta.grams[gram.id] = gram;                 var gramhtml = '<div class="col-md-3"><p><img class="img-circle" style="margin-right: 5px" width="60" src="' + gram.user.profile_picture + '">' + gram.user.username + '</p><a href="#mymodal" data-toggle="modal" data-media-id="' + gram.id +'">';                 if (gram.type === 'image') { gramhtml = gramhtml + '<img class="img-thumbnail" src="' + gram.images.low_resolution.url + '"/>'; }                 if (gram.type === 'video') { gramhtml = gramhtml + '<video class="img-thumbnail" src="' + gram.videos.low_resolution.url + '"/>'; }                 gramhtml = gramhtml + '</a></div>';                 $('.results').append(gramhtml);             });         },          setupclickevent: function () {             $('a').click(function(){                 var mediaid = $(this).data('mediaid'),                     gram = insta.grams[mediaid],                     largeimage = gram.images.standard_resolution.url,                     username = gram.user.username,                     tags = gram.tags,                     comments = '';                  $('.modal-title').html(username);                 $('.modal-body').html('<div class="col-md-6"><img class="img-responsive" src="' + largeimage + '"><div class="tagwrap">' + tags + '</div></div>');                   $.each(gram.comments.data, function(index, comment){                     comments += '<p>' + comment.text + '</p>';                 });                  $('.modal-body').append('<div class="comment-container">' + comments + '</div>');             });         },          success: function (responsedata) {             if (responsedata.meta.code === 200) {                 insta.rendergrams(responsedata.data);                 insta.setupclickevent();             } else {                 $('.results').html('<h1>an error occured</h1><p>' + responsedata.meta.error_message + '</p>');             }         },          clearfix: function () {             $('.col-md-3').each(function(i,val){                 i++;                 if(i%3===0){                     $(this).append('<div class="clearfix"></div>');                 }             });         },     };      // fires fires off     // follow here     insta.init(); }());


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