JSP如何做"正在加载数据,请稍等..."这样的提示页面 loding。。。
http://fantasy.iteye.com/blog/67320
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用ajax：ajax发个异步请求的时候 调用一个div显示 数据正在加载中 ……”，
接收到请求的时候 关闭div就可以了
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在要加载jsp页面的html代码 <body> 下添加如下：
<div id= "sending " style= "filter:alpha(opacity=80); position:absolute; top:310px; left:135px; z-index:10; visibility:hidden; width: 617px; height: 81px; ">
<TABLE WIDTH=80% BORDER=0 CELLSPACING=0 CELLPADDING=0>
<TR>
<td width=30%> </td>
<td bgcolor=#104A7B>
<table WIDTH=100% height=80 BORDER=0 CELLSPACING=2 CELLPADDING=0>
<tr>
<td bgcolor=#eeeeee align=center> 正在处理数据, 请稍候... </td>
</tr>
</table>
</td>
<td width=30%> </td>
</tr>
</table>
</div>
然后触发提交按钮事件的时候：sending.style.visibility= "visible "
OK!
如果需要等待的时间比较长，你可以把页面上的按钮在提交之后将按钮设置为buttonName.disabled=true，这样可以防止用户等不耐烦而再按。
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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style type="text/css">
a{ color:#000; font-size:12px;text-decoration:none}
a:hover{ color:#900; text-decoration:underline}
#massage_box{ position:absolute; left:expression((body.clientWidth-40)/2); top:expression((body.clientHeight-40)/2); width:40px; height:40px;filter:dropshadow(color=#666666,offx=3,offy=3,positive=2); z-index:2; visibility:hidden}
#mask{ position:absolute; top:0; left:0; bottom:0;width:expression(body.scrollWidth); height:100%; background:#666; filter:ALPHA(opacity=60); z-index:1; visibility:hidden}
.massage{border:#036 solid; border-width:1 1 3 1; width:95%; height:95%; background:#fff; color:#036; font-size:12px; line-height:150%}
.header{background:#036; height:10%; font-family:Verdana, Arial, Helvetica, sans-serif; font-size:12px; padding:3 5 0 5; color:#fff}
</style>
<script>
function createXMLHttpRequest()
{
if(window.ActiveXObject)
{
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
else
{
if(window.XMLHttpRequest)
{
xmlHttp = new XMLHttpRequest();
}
}
}
function LoadPageWait()
{
createXMLHttpRequest();
// var url = "http://extjs.com/deploy/ext-1.1/docs/";
var url = "http://www.163.com/";
// var url = "test.html";
xmlHttp.open("GET", url, true);
xmlHttp.onreadystatechange = goCallback;
xmlHttp.send(null);
}
function goCallback()
{
if(xmlHttp.readyState == 1)
{
// document.getElementById("Label1").innerHTML = "数据读取中.";
mask.style.visibility='visible';
massage_box.style.visibility='visible';
}
if(xmlHttp.readyState == 2)
{
// document.getElementById("Label1").innerHTML = "数据初始化.";
mask.style.visibility='visible';
massage_box.style.visibility='visible';
}
if(xmlHttp.readyState == 3)
{
// document.getElementById("Label1").innerHTML = "数据载入中.";
mask.style.visibility='visible';
massage_box.style.visibility='visible';
}
if(xmlHttp.readyState == 4)
{
// document.getElementById("Label1").innerHTML = "页面加载中.";
mask.style.visibility='visible';
massage_box.style.visibility='visible';
setTimeout("WriteData()", 1);
}
}
function WriteData()
{
window.location.replace("http://www.163.com/");
//window.location.replace("1.html");
return false;
}
</script>
</head>
<body>
<label>
<input type="submit" name="test" id="test" value="提交" onclick="LoadPageWait()"/>
</label>
<p>
<div id="massage_box"><div class="massage">
<img src="loading.gif" width="32" height="32" />
</div></div>
<div id="mask"></div>
</body>
</html>