例子： . 代碼如下:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>無標題文檔</title>
<style>
#screefull{display:block; border:1px solid #bddbf3; width:954px; padding:3px 5px 7px; margin:0 auto 10px; background:#fef9db; }
#mostrar{display:block; width:954px; display:none;}
#screefull a.close{ display:block; width:25px; height:20px; background:url(img/cx.gif) no-repeat 0 0; overflow:hidden; float:right; margin:16px 8px 0 0; *margin-right:5px; text-decoration:none;}
#screefull p{ display:block; text-align:center; font-family:"Microsoft Yahei"; font-size:14px; color:#000; height:28px; line-height:28px; vertical-align:middle;}
#screefull var{ display:inline-block; *display:inline; *zoom:1; background:url(img/wicon.gif) no-repeat 0 0; width:28px; height:28px; overflow:hidden; vertical-align:middle; margin-right:10px;}
#screefull em{ display:inline-block; *display:inline; *zoom:1; color:#ff0000; font-family:"Microsoft Yahei"; font-style:normal;}
#screefull span{ display:inline-block; *display:inline; *zoom:1; vertical-align:middle;}
#screefull p a{ display:inline-block; *display:inline; *zoom:1; color:#2400ff; text-decoration:underline;}
</style>
<script type="text/javascript" src="js/jquery.js"></script>
</head>
<body>
<!--begin:1-->
<div id="warn" class="scree clearfix" style="display:none;">
<div id="screefull">
<a href="#" class="close" onclick="closewarn('close')">[x]</a>
<p><span>在<em>未通過審核的網站</em>添加廣告代碼，將不會產生傭金。<a href="#" target="_blank" >我知道了</a></span></p>
</div>
</div>
<script type="text/javascript">
function closewarn(type)
{
$("#warn").slideUp("slow");
if(type == 'know')
{
$.post(window.location.href,{op : 'setwarn'},function(data)
{
return true;
});
}
}
window.onload = function()
{
$("#warn").slideDown(2000);
}
</script>
<!--end:1-->
</body>
</html>
解釋上面代碼段： 1、$("#warn").slideUp("slow");向上滑動， $("#warn").slideDown(2000);向下滑動
2、$.post(window.location.href,{op : 'setwarn'},function(data)
{
return true;
})
運用到了ajax 提交 跟服務器進行交互，
第一個參數是請求的地址 第二個是提交的參數 第三個是請求成功 之後調用的方法
參數op 的值是setwarn json串的格式具體運用解說看http://www.w3school.com.cn/jquery/ajax_post.asp
url 對應 locaotion.href(取得是當前頁面的地址)
data對應 {op：setwarn} 字符串
success 對應 函數
3、window.onload = function(){}作用一般在<text/javascript>中寫的函數都要在body頁面中調用，用此函數就不用等著body頁面中調用就可以執行了