<HTML>
<HEAD>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<TITLE> ajax passport </TITLE>
<style>
body{
font-size:14px;
}
</style>
<SCRIPT LANGUAGE="JavaScript">
<!--
function InitAjax(){
var http_request = false;
if (window.XMLHttpRequest){
http_request = new XMLHttpRequest();
if (http_request.overrideMimeType){
http_request.overrideMimeType('text/xml');
}
}else if (window.ActiveXObject){
try{
http_request = new ActiveXObject("Msxml2.XMLHTTP");
}
catch (e){
try{
http_request = new ActiveXObject("Microsoft.XMLHTTP");
}catch (e)
{}
}
}
if (!http_request){
alert('Giving up :( Cannot create an XMLHTTP instance');
return false;
}
return http_request;
}
function IDRequest(n)
{
//定义收到服务器的响应后需要执行的JavaScript函数
document.getElementById('message').innerHTML = '数据发送中，请稍候...';
var proxy = "proxy.asp?uid="
url=proxy+document.getElementById('username').value+'&pwd='+document.getElementById('userpwd').value;//定义网址参数
xmlhttp_request=InitAjax();//调用创建XMLHttpRequest的函数
xmlhttp_request.open('GET', url, true);
xmlhttp_request.send(null);
xmlhttp_request.onreadystatechange = doContents;//调用doContents函数
}
function doContents()
{
if (xmlhttp_request.readyState == 4)
{
// 收到完整的服务器响应
if (xmlhttp_request.status == 200)
{
//HTTP服务器响应的值OK
// var response = xmlhttp_request.responseXML.documentElement;
// var result = response.getElementsByTagName('Status')[0].firstChild.data;//返回result节点数据
var result = xmlhttp_request.responsetext;
if(result ==0)
{
document.getElementById('message').innerHTML = "<span style='color:green'>用户名"+document.getElementById('username').value+" 注册成功</span>";
}
else if(result ==1)
{
document.getElementById('message').innerHTML = "<span style='color:red'>对不起,用户名"+document.getElementById('username').value+"已经注册</span>";
}
else if(result ==2)
{
document.getElementById('message').innerHTML = "<span style='color:red'>用户名或密码不能为空</span>";
}
//将服务器返回的字符串写到页面中ID为message的区域
}
else
{
document.getElementById('message').innerHTML = "<span style='color:red'>系统错误！</span>";
alert(xmlhttp_request.status);
}
}
}
function dlnum(){
var str;
str=document.all.message.innerHTML;
str.valueOf();
if (str=='')
str=0;
if (isNaN(str))
str=0;
else
str=Number(str);
str=str+1;
document.all.message.innerHTML=str;
}
//-->
</SCRIPT>
</HEAD>
<BODY>
请输入用户名：<input type="text" id="username" />
请输入密码： <input type="password" id="userpwd" />
<input type="button" id="b1" value="提交" onclick="IDRequest();" />
<A HREF="javascript:;" onclick="dlnum();">点击</A>
<div id="message"></div>
</BODY>
</HTML>
<!-- proxy.asp -->
<%
Response.buffer=true
Response.Expires = -1
Response.AddHeader "Pragma","no-cache"
Response.AddHeader "cache-ctrol","no-cache"
Set Conn = Server.CreateObject("ADODB.Connection")
Set Rs = Server.CreateObject("ADODB.Recordset")
ConnSQL = "driver={sql server};database=test;server=.;uid=sa;pwd="
Conn.open ConnSQL
uid = Request.QueryString("uid")
pwd = Request.QueryString("pwd")
Function ResponseText(val)
Response.Write val
End Function
If Trim(uid) <> "" And pwd <> "" Then
Sql = "Select * From test..test Where aa='"&uid&"'"
Rs.Open Sql,Conn,1,3
If Rs.Eof And Rs.Bof Then
Sql = "Insert Into test..test values('"&uid&"','"&pwd&"')"
Conn.Execute Sql
ResponseText("0")
Else
ResponseText("1")
End If
Rs.Close
Else
ResponseText("2")
End If
Conn.Close
%>