https://hutchisonports.com/js/jquery.annalka.js?v=1790936788

1(function($) {
2    $.fn.annalka = function(targetString, options) {
3        var settings = $.extend({}, $.fn.annalka.defaults, options);
4        var self = this;
5
6        var text = $(self).text();
7        var step = 0;
8        var solved = 0;
9
10        var interval = setInterval(function () {
11            if (step > settings.steps) {
12                step = 0;
13                if (targetString.length < text.length) {
14                    text = text.substring(0, text.length - 1);
15                } else if (targetString.length > text.length) {
16                    text += randomChar(settings.chars);
17                } else {
18                    text = stringReplaceAt(text, solved, targetString[solved]);
19                    solved++;
20                }
21            }
22            step += 1;
23
24            if (text === targetString) {
25                clearInterval(interval);
26                settings.callback();
27            } else {
28                text = stringReplaceAt(text, Math.floor(Math.random() * (text.length - solved)) + solved, randomChar(settings.chars));
29            }
30
31            $(self).text(text);
32
33        }, settings.tick);
34
35        return this;
36    };
37
38    $.fn.annalka.defaults = {
39        tick: 15,
40        steps: 4,
41        chars: 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789',
42        callback: function() {}
43    };
44
45    function stringReplaceAt(str, index, character) {
46        return str.substring(0, index) + character + str.substring(index+character.length);
47    }
48
49    function randomChar(possible) {
50        return possible[Math.floor(Math.random() * possible.length)];
51    }
52})(jQuery);