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<%@page language="java" contentType="text/html;charset=gb2312"%>
<! DOCTYPE HTML PUBLIC"-//W3C//DTD
HTML 4.0//EN"
"http://www.w3.org/TR/REC-html140/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>AJAX用户注册
演示程序</title>
<script language="javascript" type="text/javascript">
<!--
//创建函数
function createXMLHTTP()
{
var request;
var browser = navigator.appName;
//使用IE,则使用XMLHttp对象
if(browser == "Microsoft Internet Explorer")
{
var arrVersions = ["Microsoft.XMLHttp", "MSXML2.XMLHttp.4.0",
"MSXML2.XMLHttp.3.0", "MSXML2.XMLHttp","MSXML2.XMLHttp.5.0"];
for (var i=0; i < arrVersions.length; i++)
{
try
{
//从中找到一个支持的版本并建立XMLHttp对象
request = new ActiveXObject(arrVersions[i]);
return request;
}
catch (exception)
{
//忽略,继续
}
}
}
else
{
//否则返回一个XMLHttpRequest对象
request = new XMLHttpRequest();
if(request.overrideMimeType)
{
request.overrideMimeType('text/xml');
}
return request;
}
}
//全局XMLHTTP对象实例变量
var http = createXMLHTTP();
//发送请求
function chkUser()
{
var url = "check.php"; //请求"CheckUserName" ServLet
var name = document.getElementById("userName").value;
url += ("?userName="+escape(name)+"&oprate=chkUser");
http.open("GET",url,true);
http.onreadystatechange = ProcessHttpResponse;
http.send(null);
return ;
}
//处理响应
function ProcessHttpResponse()
{
if(http.readyState == 4)
{
if(http.status == 200)
{
var
xmlDocument = http.responseXML;
if(http.responseText!="该用户名有效,可以使用!")
{
//返回的信息动态显示
document.getElementById("showStr").style.display = "";
document.getElementById("userName").style.background= "#FF0000";
document.getElementById("showStr").innerText = http.responseText;
}
else
{
document.getElementById("userName").style.background= "#FFFFFF";
document.getElementById("showStr").style.display = "";
document.getElementById("showStr").innerText = http.responseText;
}
}
else
{
alert("你所请求的页面发生异常,可能会影响你浏览该页的信息!");
alert(http.status);
}
}
}
//检验输入密码
function chkpassword()
{
var m=document.form1;
if(m.password.value.length>20 || m.password.value.length<6 )
{
document.getElementById("passwordStr").style.display = "";
document.getElementById("password").style.background= "#FF0000";
document.getElementById("passwordStr").innerText = "对不起,密码必须为英文字母、数字或下划线,长度为6~20!";
}
else
{
document.getElementById("password").style.background= "#FFFFFF";
document.getElementById("passwordStr").style.display = "none";
}
}
//验证两次密码是否一致
function chkconfirmPassword()
{
var m=document.form1;
if (m.password.value != m.confirmPassword.value)
{
document.getElementById("confirmPasswordStr").style.display = "";
document.getElementById("confirmPassword").style.background= "#FF0000";
document.getElementById("confirmPasswordStr").innerText = "对不起,密码与重复密码不一致!";
}
else
{
document.getElementById("confirmPass
word").style.background= "#FFFFFF";
document.getElementById("confirmPasswordStr").style.display = "none";
}
}
//验证Email是否有效
function chkEmail()
{
var m=document.form1;
var email = m.email.value;
//正则表达式
var regex = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;
var flag = regex.test(email);
if(!flag)
{
document.getElementById("emailStr").style.display = "";
document.getElementById("email").style.background= "#FF0000";
document.getElementById("emailStr").innerText = "对不起,邮箱地址无效!";
}
else
{
document.getElementById("email").style.background= "#FFFFFF";
document.getElementById("emailStr").style.display = "none";
}
}
//提交检查函数
function SubmitCheck()
{
var m=document.form1;
if(m.userName.value.length==0)
{
alert("对不起,用户名必须为英文字母、数字或下划线,长度为5~20。");
m.userName.focus();
return false;
}
if(m.password.value.length==0)
{
alert("对不起,密码必须为英文字母、数字或下划线,长度为5~20。");
m.password.focus();
return false;
}
if (m.password.value != m.confirmPassword.value)
{
alert("对不起,密码与重复密码不一致!");
m.confirmPassword.focus();
return false;
}
if(m.email.value.length==0)
{
alert("对不起,邮箱地址不能为空!!