Code script lazy load new Google Adsense

Google has replaced

<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js</script>

with

<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1234567890123456" crossorigin="anonymous"</script>

Ref: Google Adsense Announcement

Old Adsense Code was like:

<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-XXXXXXXXXXXXXXXX"
     crossorigin="anonymous"></script>
<ins class="adsbygoogle"
     style="display:inline-block;width:350px;height:90px"
     data-ad-client="ca-pub-XXXXXXXXXXXXXXXX"
     data-ad-slot="XXXXXXXXXX"></ins>
<script>
     (adsbygoogle = window.adsbygoogle || []).push({});
</script>

New Adsense Code is like:

<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-XXXXXXXXXXXXXXXX"
     crossorigin="anonymous"></script>
<ins class="adsbygoogle"
     style="display:inline-block;width:350px;height:90px"
     data-ad-client="ca-pub-XXXXXXXXXXXXXXXX"
     data-ad-slot="XXXXXXXXXX"></ins>
<script>
     (adsbygoogle = window.adsbygoogle || []).push({});
</script>

Old JS code to load the Ad after the page load is complete was:

    <script type="text/javascript">
        function downloadJSAtOnload() {
        var element = document.createElement("script");
        element.src = "https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js";
        document.body.appendChild(element);
        }
        if (window.addEventListener)
        window.addEventListener("load", downloadJSAtOnload, false);
        else if (window.attachEvent)
        window.attachEvent("onload", downloadJSAtOnload);
        else window.onload = downloadJSAtOnload;
    </script>