Delegate event - dataset

var feed = '';
for (var j = 0; j < feedItem.length; j++) {
  feed += '<a href="#" class="list-group-item detail-item" data-id="feedItem[j]._id">Testing</a>';
}
$('#listFeeds').html(feed);

$(document).on('click', 'a.detail-item', function (event) {
      event.preventDefault();

      var id = $(this).data('id');      // Tampung nilai dari dataset

      $.ajax({
         type: "GET",
         dataType: "json",
         url: "http://localhost:3000/pickitem/"+id+"/detail", // Nilai variable id malah jadi string "feedItem[j]._id"
         success: function(data) {
           console.log(data);
         }
      });
  });