append code to the head of the dom

        oScript.src = "https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js";

        oScript.setAttribute("async", "");

        oScript.setAttribute("data-ad-client", "ca-pub-9039393129169217");

        document.body.appendChild(oScript);

        document.head.appendChild(oScript);

        // <script data-ad-client="ca-pub-9039393129169217" async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>

    } else {

        console.log("小程序环境，跳过");