ASP教程：关于AJAX一个简单的例子
asp教程：关于ajax一个简单的例子
index.：
程序代码
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=gb2312" />
<title>ajax简单应用</title>
<script language="javascript">
//创建xmlhttprequest对象
var request = false;
try {
request = new xmlhttprequest();
} catch (trymicrosoft) {
try {
request = new activexobject("msxml2.xmlhttp");
} catch (othermicrosoft) {
try {
request = new activexobject("microsoft.xmlhttp");
} catch (failed) {
request = false;
}
}
}
if (!request)alert("error initializing xmlhttprequest!");
//获取信息
function getinfo() {
var url = "info.asp?id=" + math.random();
request.open("get", url, true);
request.onreadystatechange = updatepage;
request.send(null);
}
//更新页面
function updatepage() {
if (request.readystate == 4) {
if (request.status == 200) {
var response = request.responsetext;
document.getelementbyid("p1").innertext = response;
}else if(request.status == 404) {
alert ("requested url is not found.");
} else if (request.status == 403) {
alert("access denied.");
} else
alert("status is " + request.status);
}
}
</script>
</head>
<body>
<input name="btn" type="button" id="btn" value="获取" onclick="getinfo();" />
<p id="p1">此处显示新 div 标签的内容</p>
</body>
</html>
info.asp：
程序代码
<%
response.charset = "gb2312" 不设置中文会乱码
dim i,arr(9)
arr(0) = "随机信息000000000000000000"
arr(1) = "随机信息111111111111111111"
arr(2) = "随机信息222222222222222222"
arr(3) = "随机信息333333333333333333"
arr(4) = "随机信息444444444444444444"
arr(5) = "随机信息555555555555555555"
arr(6) = "随机信息666666666666666666"
arr(7) = "随机信息777777777777777777"
arr(8) = "随机信息888888888888888888"
arr(9) = "随机信息999999999999999999"
randomize
i = int(10*rnd())
response.write arr(i)
%>
说明：ajax对服务器返回的结果没有格式上的要求，只需将结果用"response.write"输出即可。