https://www.astrill.com/blog/wp-content/plugins/Astrill%20User%20Feedback//js/script.js?ver=1.0

1jQuery(document).ready(function($) {
2  var postId = $('#astrillFeedback_post_id').val();
3  var hasFeed = localStorage.getItem('feeback_' + postId);
4  var msg = $('.already-sub');
5  if (hasFeed) $('#astrillFeedback').hide();
6
7  $(".feedback").on('click', function() {
8    $('.feedback').removeClass('selected');
9    $(this).addClass('selected');
10  })
11
12  $('#astrillFeedback').on('submit', function(event) {
13    event.preventDefault();
14    msg.after('<div class="uk-text-center" id="tmp_id"><div uk-spinner></div> Please wait...</div>');
15    $(this).hide();
16    let post_id = $('#astrillFeedback_post_id').val(),
17      yes_no = $(".feedback.selected").val();
18    var formData = {"post_id": post_id, "yes_no": yes_no};
19    $.post(window.location.href, formData, function(res) {
20      var postId = $('#astrillFeedback_post_id').val();
21      localStorage.setItem('feeback_' + postId,1);
22      $('#astrillFeedback').hide();
23      $('#tmp_id').remove();
24      msg.show();
25    })
26  });
27});