https://kurse.knirpse-komplizen.de/templates-default/_js/modules/email-suggest.minified.35004.js

1var EmailSuggest = function () {
2
3    // "did you mean …?" email typo check (#49788): opt-in via data-email-suggest
4    // on frontend email inputs; server endpoint delivers translated messages
5
6    var removeHint = function ($input) {
7        if ($input.data('emailSuggestHint')) {
8            $input.data('emailSuggestHint').remove();
9            $input.removeData('emailSuggestHint');
10        }
11    };
12
13    var showHint = function ($input) {
14        removeHint($input);
15
16        // place hint after the input group (e.g. newsletter) or the input itself
17        var $anchor = $input.closest('.input-group').length ? $input.closest('.input-group') : $input,
18            $hint = $('<small class="help-block email-suggest-hint" aria-live="polite"></small>');
19
20        $anchor.after($hint);
21        $input.data('emailSuggestHint', $hint);
22
23        return $hint;
24    };
25
26    var showSuggestion = function ($input, res) {
27        // message contains a %s placeholder — replace it with the clickable suggestion
28        var parts = (res.message || '%s').split('%s'),
29            $link = $('<a href="javascript:;" class="email-suggest-apply"></a>').text(res.suggestion),
30            $hint = showHint($input);
31
32        $hint.append(document.createTextNode(parts[0] || ''), $link, document.createTextNode(parts[1] || ''));
33
34        $link.on('click', function () {
35            // whitelist matches are mx-validated — mark as checked, no re-request
36            $input.val(res.suggestion).data('emailSuggestLast', res.suggestion);
37            removeHint($input);
38            $input.trigger('change');
39        });
40    };
41
42    var handleFields = function () {
43        // namespaced off/on: init() may run twice on some pages — keep the binding idempotent
44        $(document).off('change.emailSuggest').on('change.emailSuggest', 'input[data-email-suggest]', function () {
45            var $input = $(this),
46                value = $.trim($input.val());
47
48            // skip unchanged values (blur chains re-trigger change, e.g. checkout.js)
49            if (value === $input.data('emailSuggestLast')) {
50                return;
51            }
52            $input.data('emailSuggestLast', value);
53            removeHint($input);
54
55            // skip empty or obviously incomplete input
56            if (value.length < 4 || value.indexOf('@') === -1) {
57                return;
58            }
59
60            // abort a still running check (fast field switches)
61            if ($input.data('emailSuggestXhr')) {
62                $input.data('emailSuggestXhr').abort();
63            }
64
65            $input.data('emailSuggestXhr', $.post(Config.get('base-url') + '/email/check/', {
66                email: value
67            }, function (res) {
68                if (res.status === 'suggestion' && res.suggestion) {
69                    showSuggestion($input, res);
70                } else if (res.status === 'invalid') {
71                    showHint($input).addClass('text-danger').text(res.message);
72                }
73            }, 'json'));
74        });
75    };
76
77    return {
78        // main function to initiate the module
79        init: function () {
80            handleFields();
81        }
82    };
83
84}();