谷歌广告联盟 Google Adsense 使用延迟加载 js 的形式，提升页面打开速度

# 放到需要展现广告的地方
<div id="ad"></div>
 
# body底部引用js
<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
<script>
    //ad
    function load_google_ad(){
        $("#ad").append("<ins class='adsbygoogle' style='display:block' data-ad-client='ca-pub-{{ ad_client }}' data-ad-slot='{{ ad_slot }}' data-ad-format='auto' data-full-width-responsive='true'></ins><script>(adsbygoogle = window.adsbygoogle || []).push({});<\/script>");
    }
    $(document).ready(function(){
        setTimeout("load_google_ad()", 3000);
    });
</script>