非阻塞动态加载javascript广告实现代码_javascript技巧

<script> <BR>//ad("open",'alert("ddd")'); <BR>var JSScript = { <BR>inject:function (htmlId,jsCode){ <BR>var script = document.createElement("script"); <BR>script.text = jsCode; <BR>document.getElementById(htmlId).appendChild(script); <BR>}, <BR>loadeing:function (url,charset,callback){ <BR>var script = document.createElement("script"); <BR>script.src = url; <BR>script.charset = charset; <BR>script.loaded= false; <BR>script.onload = function(){ <BR>script.loaded = true; <BR>callback(); <BR>}; <BR>script.onreadystatechange = function(){ <BR>if(!script.onloadDone && ("loaded"==script.readyState || "complete"==script.readyState)){ <BR>script.onload(); <BR>} <BR>}; <BR>document.getElementsByTagName("head")[0].appendChild(script); <BR>} <BR>} <BR>JSScript.loadeing("http://cbjs.baidu.com/js/s.js","gb2312",initAd) <BR>function initAd(){ <BR>JSScript.inject("open",'BAIDU_CLB_singleFillSlot("72893")'); <BR>} <BR></script>