https://vision-forward.org/wp-content/plugins/email-encoder-bundle…?ver=2d37aa1530beb8634b12ca51eeda0b4b

1/* Email Encoder */
2/*global jQuery, window*/
3jQuery(function ($) {
4
5    'use strict';
6
7    // encoding method
8    function rot13(s) {
9        // source: http://jsfromhell.com/string/rot13
10        return s.replace(/[a-zA-Z]/g, function (c) {
11            return String.fromCharCode((c <= 'Z' ? 90 : 122) >= (c = c.charCodeAt(0) + 13) ? c : c - 26);
12        });
13    }
14
15    /**
16     * EMAIL RELATED LOGIC
17     */
18
19    // fetch email from data attribute
20    function fetchEmail(el) {
21        var email = el.getAttribute('data-enc-email');
22
23        if (!email) {
24            return null;
25        }
26
27        // replace [at] sign
28        email = email.replace(/\[at\]/g, '@');
29
30        // encode
31        email = rot13(email);
32
33        return email;
34    }
35
36    // replace email in title attribute
37    function parseTitle(el) {
38        var title = el.getAttribute('title');
39        var email = fetchEmail(el);
40
41        if (title && email) {
42            title = title.replace('{{email}}', email);
43            el.setAttribute('title', title);
44        }
45    }
46
47    // set input value attribute
48    function setInputValue(el) {
49        var email = fetchEmail(el);
50
51        if (email) {
52            el.setAttribute('value', email);
53        }
54    }
55
56    // open mailto link (fallback for links that were never hydrated)
57    function mailto(el) {
58        var email = fetchEmail(el);
59
60        if (email) {
61            window.location.href = 'mailto:' + email;
62        }
63    }
64
65    // Build the real "mailto:" href from data-enc-email, lazily — only once the
66    // visitor engages with the link (mousedown / touch / focus), which always
67    // happens before a click, middle-click or "open in new tab". Doing it lazily
68    // rather than on page load keeps the plaintext address out of the rendered
69    // DOM for agents that run JS but never interact (search-engine renderers,
70    // headless harvesters), while still giving real navigations a genuine link.
71    // It also replaces the inert "javascript:;" placeholder before any navigation,
72    // so iOS Safari never tries to open a javascript: URL in a new tab (which
73    // throws "cannot run script").
74    function hydrateMailto(el) {
75        var email = fetchEmail(el);
76
77        if (email && el.getAttribute('href') !== 'mailto:' + email) {
78            el.setAttribute('href', 'mailto:' + email);
79        }
80    }
81
82    // revert
83    function revert(el, rtl) {
84        var email = fetchEmail(el);
85
86        if (email) {
87           rtl.text(email);
88           rtl.removeClass('eeb-rtl');
89        }
90    }
91
92    // prepare for copying email
93    document.addEventListener('copy', function(e){
94        $('a[data-enc-email]').each(function () {
95            var rtl = $(this).find('.eeb-rtl');
96
97            if (rtl.text()) {
98                revert(this, rtl);
99            }
100        });
101        console.log('copy');
102    });
103
104    // hydrate the mailto href the moment the visitor engages with the link,
105    // before any click / middle-click / "open in new tab" navigation resolves
106    $('body').on('mousedown touchstart focusin', 'a[data-enc-email]', function () {
107        hydrateMailto(this);
108    });
109
110    // set mailto click
111    $('body').on('click', 'a[data-enc-email]', function () {
112        // Already hydrated to a real mailto (on mousedown/touch/focus): let the
113        // browser handle it natively. Otherwise open it ourselves.
114        if ((this.getAttribute('href') || '').indexOf('mailto:') === 0) {
115            return;
116        }
117
118        mailto(this);
119    });
120
121    // parse title attribute
122    $('a[data-enc-email]').each(function () {
123        parseTitle(this);
124    });
125
126    // parse input fields
127    $('input[data-enc-email]').each(function () {
128        setInputValue(this);
129    });
130
131});