<html>
<head>
<title></title>
<script type="text/javascript">
function ajaxFunction()
{
var xmlHttp;
try
{
xmlHttp=new XMLHttpRequest();//firefox,Oper8.0+,Safari
}
catch(e)
{
try{
xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
}
catch(e)
{
try
{
xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
}
catch(e)
{
alert("浏览器不支持Ajax!");
return false;
}
}
}
xmlHttp.onreadystatechange=function()
{
if(xmlHttp.readyState==4)
{
document.myForm.time.value=xmlHttp.responseText;
}
}
xmlHttp.open("GET","time.aspx",true);
xmlHttp.send(null);
}
</script>
</head>
<body>
<form name="myForm">
用户：<input type="text" name="username" onkeyup="ajaxFunction();" />
时间:<input type="text" name="time" />
</form>
</body>
</html>
