Javascript Counter beispiele

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    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<script>
(function($) {
    var useWindow = window;
    // From https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/keys
    if (!Object.keys) {
        Object.keys = (function() {
            'use strict';
            var hasOwnProperty = Object.prototype.hasOwnProperty,
                    hasDontEnumBug = !({toString: null}).propertyIsEnumerable('toString'),
                    dontEnums = [
                        'toString',
                        'toLocaleString',
                        'valueOf',
                        'hasOwnProperty',
                        'isPrototypeOf',
                        'propertyIsEnumerable',
                        'constructor'
                    ],
                    dontEnumsLength = dontEnums.length;
            return function(obj) {
                if (typeof obj !== 'object' && (typeof obj !== 'function' || obj === null)) {
                    throw new TypeError('Object.keys called on non-object');
                }
                var result = [], prop, i;
                for (prop in obj) {
                    if (hasOwnProperty.call(obj, prop)) {
                        result.push(prop);
                    }
                }
                if (hasDontEnumBug) {
                    for (i = 0; i < dontEnumsLength; i++) {
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