Javascript Inject Adsense Dynamically

Code
function injectTortugaAds (pubID, adSlot)

{

    var actualCode = '(adsbygoogle = window.adsbygoogle || []).push({google_ad_client: "ca-pub-' + pubID + '", enable_page_level_ads: true});';

    var script = document.createElement('script');

    script.textContent = actualCode;

    (document.head || document.documentElement).appendChild(script);



    //------------------------------------------------------------



    var externalScript = document.createElement("script");

    externalScript.type = "text/javascript";

    externalScript.setAttribute('async', 'async');

    externalScript.src = "//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js";

    document.getElementsByTagName('body')[0].appendChild(externalScript);



    var ins = document.createElement("ins");

    ins.setAttribute('class', 'adsbygoogle');

    ins.setAttribute('style', 'display:block;');/*add other styles if required*/

    ins.setAttribute('data-ad-client', 'ca-pub-' + pubID);

    ins.setAttribute('data-ad-slot', adSlot);

    ins.setAttribute('data-ad-format', 'auto');

    document.getElementsByTagName('body')[0].appendChild(ins);



    var inlineScript = document.createElement("script");

    inlineScript.type = "text/javascript";

    inlineScript.text = '(adsbygoogle = window.adsbygoogle || []).push({});'

    document.getElementsByTagName('body')[0].appendChild(inlineScript);

    //--------------------------------------------------------------

    [].forEach.call(document.querySelectorAll('.adsbygoogle'), function () {

        (adsbygoogle = window.adsbygoogle || []).push({});

    });



}