körvkörven

(function () {
    var words = ['President Donald J. Trump', 'President Donald Trump', 'President Trump', 'Donald John Trump',
                 'Donald J. Trump', 'Donald Trump', 'Mr. Trump', 'Trump'];
    var replace_with = ['The Kwisatz Haderach', 'The God Emperor', 'The Tango Faced Twatnacker',
                        'The Peerless Abortion of Good Taste', 'Der Furher',
                        'The Knight of the Abyss', 'Myrna Minkoff\'s Horny Uncle',
                        'The Glorious Leader and Saviour of Western Civilisation',
                        'His Abhorrent Saltiness'];

    var replacepatterns = [];

    for (var i = 0; i < words.length; i++) {
        replacepatterns.push(new RegExp(words[i], 'ig'))
    }

    function replaceText(node) {
        var current = node.nodeValue;

        for (var i = 0; i < replacepatterns.length; i++) {
            var replacer = replace_with[Math.floor(Math.random() * replace_with.length)];
            current = current.replace(replacepatterns[i], replacer);
        }

        node.nodeValue = current;
    }

    function traverse(node) {
        var children = node.childNodes;
        var childLen = children.length;
        for (var i = 0; i < childLen; i++) {
            var child = children.item(i);
            if (child.nodeType == 3)//or if(child instanceof Text)
                replaceText(child);
            else
                traverse(child);
        }
    }

    traverse(document.body);

}());