Smart prototype

(function(w,d){
    var debug = 1;

    var code =
    "<scr"+"ipt async src=\"https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js\"" +
    "     crossorigin=\"anonymous\"></scr"+"ipt>" +
    "<ins class=\"adsbygoogle\"" +
    "    style=\"display:block; text-align:center;\"" +
    "    data-ad-layout=\"in-article\"" +
    "    data-ad-format=\"fluid\"" +
    "    data-ad-client=\"ca-pub-7908594684073100\"" +
    "    data-ad-slot=\"9471555592\"></ins>" +
    "<scr"+"ipt>" +
    "    (adsbygoogle = window.adsbygoogle || []).push({});" +
    "</scr"+"ipt>";

    function l(m) {if (debug) {console.log(m)}}

    function addCode(o){
        l(o);
        if(!o) {l('return'); return; }
        if(!o.position) {l('default pos'); o.position = 'after';}
        if(!o.target)   {l('default target'); o.target   = document.querySelector('body');}
        var wrapper = document.createElement('div');
        l(o.wrapper);l(Object.keys(o.wrapper).length);l((o.wrapper && Object.keys(o.wrapper).length));
        if(o.wrapper && Object.keys(o.wrapper).length)
        {
            l('got attrs for wrapper');
            Object.keys(o.wrapper).forEach(function(k){
                wrapper.setAttribute(k, o.wrapper[k]);
            });
            l(wrapper);
        }
        var temp = document.createElement('div');
        temp.innerHTML = o['code'];

        if(o.position === 'after'){l('after'); o.target.after(wrapper);}
        if(o.position === 'before'){l('before'); o.target.before(wrapper);}
        if(o.position === 'top'){l('top'); o.target.prepend(wrapper);}
        if(o.position === 'bottom'){l('bottom'); o.target.append(wrapper);}
        wrapper.append(temp);
        Array.from(temp.childNodes).forEach(function(node, index, array) {
            var newNode = document.createElement(node.tagName);
            for(let attr of node.attributes) {
                newNode.setAttribute(attr.name, attr.value);
            }
            var data = (node.text || node.textContent || node.innerHTML || null)
            if(data)
            {
                newNode.appendChild(document.createTextNode(data));
            }
            wrapper.appendChild(newNode);
            temp.removeChild(node);
        });
        console.log(wrapper);
        wrapper.removeChild(temp);
    }

    var path = w.location.pathname;
    console.log(path);
    var nodes = null;
    if(path.indexOf('/news/') !== -1)
    {
        l('news');
        nodes = document.querySelectorAll('#th-content .th-description > div > p:first-child, #th-content .th-description > div > p:nth-child(4n+1)');
    }
    else if(path.indexOf('/guide/') !== -1)
    {
        l('guide');
        nodes = document.querySelectorAll('#th-content .th-description > div:first-child');
    }
    else if(path === '/latest-news')
    {
        l('latest-news');
        nodes = document.querySelectorAll('#th-content .th-themepost:first-child, #th-content .th-themepost:nth-child(4n+1)');
    }
    if(nodes.length)
    {
        nodes.forEach(function(node){
            addCode({
                code: code,
                target: node,
                position: 'after',
                wrapper: {
                    'class': 'adsense_smart',
                    'style': 'padding: 0 0 15px 0; clear: both;'
                }
            });
        });
    }
})(window, document);