<script type="text/javascript">
<!--
//3个用于实现无刷新数据读取的函数
var xmlHttp ;
//用来记录setTimeout返回值
var TimeoutId;
function createXMLHttpRequest()
{
if(window.ActiveXObject)
{
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
else if(window.XMLHttpRequest) {
xmlHttp = new XMLHttpRequest();
}
}
function startRequest()
{
createXMLHttpRequest();
var url = "http://www.163.com";
xmlHttp.onreadystatechange = handleStateChange;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
TimeoutId=setTimeout("startRequest()",1000);
//alert(TimeOutId);
}
function handleStateChange()
{
if(xmlHttp.readyState == 1)
{
document.getElementById("msg").innerHTML = "正在连接服务器......";
}
else if(xmlHttp.readyState == 2)
{
document.getElementById("msg").innerHTML = "正在加载信息......";
}
else if(xmlHttp.readyState==3)
{
document.getElementById("msg").innerHTML = "数据交互中，请稍后......";
}
else if(xmlHttp.readyState == 4)
{
if(xmlHttp.status == 200)
{
//document.getElementById("show").innerHTML = xmlHttp.responseText;
document.getElementById("msg").innerHTML="加载完毕";
document.clear();
document.write(xmlHttp.responseText);
location.reload();
// document.getElementById("show").innerHTML = xmlHttp.responseText;
//停止执行setTimeout()
clearTimeout(TimeoutId);
}
else
{
document.getElementById("msg").innerHTML = "数据读取失败，请稍后再试......";
}
}
}
//-->
</script>
<body onload="startRequest();">
<div id="msg">
</div>
<div id="show">
</div>
</body>
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