网页加载效果实现

<style>/*opacity是设置遮罩透明度的，可以自己调节*/#loading{position:fixed;top:0;left:0;width:100%;height:100%;background:#f8f8f8;opacity:1;z-index:15000;}#loading img{position:absolute;top:46%;left:46%;width:150px;height:150px;margin-top:-15px;margin-left:-15px;}</style>
<div id="loading">	<img alt="" src="__PUBLIC__/img/timg.gif"><br></div><script> document.onreadystatechange = completeLoading;          //加载状态为complete时移除loading效果    function completeLoading() {      if (document.readyState == "complete") {        $("#loading").hide();       }    } </script>