https://www.fun-japan.jp/assets/js/web/survey-bar.js

1$(() => {
2    $('.__survey-bar').each(function() {
3        const dv = $(this);
4        if (!dv.find('input[name="__survey-bar-can-submit"]')[0]) {
5            return;
6        }
7        dv.find('form').submit(function(event) {
8            event.preventDefault();
9
10            const fm = $(this);
11            if (fm.attr('__SUBMITTING') === 'Y') {
12                return false;
13            }
14            // Cover the bar div
15            fm.attr('__SUBMITTING', 'Y');
16            fm.find('.survey-bar-cover b').hide();
17            fm.find('.survey-bar-cover .fa-refresh').show();
18            fm.find('.survey-bar-cover').show();
19            $.post(fm.attr('action'), fm.serialize(), function(json) {
20                if (json.success) {
21                    fm.parent().html(json.html);
22                    $('html, body').animate({ scrollTop: dv.offset().top - 48 }, 333);
23                    return;
24                }
25                // Show message and uncover
26                fm.attr('__SUBMITTING', 'N');
27                fm.find('.survey-bar-cover .fa-refresh').hide();
28                fm.find('.survey-bar-cover b').text(json.message).show();
29                setTimeout(function() {
30                    fm.find('.survey-bar-cover').hide();
31                }, 3000);
32            }, 'json').fail(function() {
33                // Show message and uncover
34                fm.attr('__SUBMITTING', 'N');
35                fm.find('.survey-bar-cover .fa-refresh').hide();
36                fm.find('.survey-bar-cover b').text(fm.find('.survey-bar-cover b').attr('data-df-error')).show();
37                setTimeout(function() {
38                    fm.find('.survey-bar-cover').hide();
39                }, 3000);
40            });
41
42            return false;
43        }).find('input[type=submit]').prop('disabled', false);
44    });
45});