用AJAX實現無重新整理資料讀取與顯示
*******資料顯示頁ajax.asp:
<script type="text/javascript">
<!--
/*
* Author: Wintalen
* Email: winalen (at) 163.com
* OICQ: 83151085
* CopyRight: www.jgzx.net
*/
//3個用於實現無重新整理資料讀取的函式
var xmlHttp ;
function createXMLHttpRequest()
{
if(window.ActiveXObject)
{
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
else if(window.XMLHttpRequest) {
xmlHttp = new XMLHttpRequest();
}
}
function startRequest()
{
createXMLHttpRequest();
var url = "test.asp";
xmlHttp.onreadystatechange = handleStateChange;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
setTimeout("startRequest()",1000);
}
function handleStateChange()
{
if(xmlHttp.readyState == 1)
{
document.getElementById("weather").innerHTML = "正在連線伺服器......";
}
else if(xmlHttp.readyState == 2)
{
document.getElementById("weather").innerHTML = "正在載入資訊......";
}
else if(xmlHttp.readyState == 4)
{
if(xmlHttp.status == 200)
{
document.getElementById("show").innerHTML = xmlHttp.responseText;
}
else
{
document.getElementById("weather").innerHTML = "資料讀取失敗，請稍後再試......";
}
}
else
{
document.getElementById("weather").innerHTML = "伺服器連線失敗！";
}
}
//-->
</script>
<body onload="startRequest();">
<div id="show"></div>
</body>
********資料生成頁test.asp:
<%
'下面這兩行不能少，一定要加上才能實現更新效果
Response.Buffer=true
Response.Expires=0
%>
<%=now()%>