这是
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="regjs.aspx.cs" Inherits="regjs" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>无标题页</title>
<script src="JS/reg.js" language="javascript" type="text/javascript"></script>
</head>
<body>
<form id="form1" runat="server">
<table>
<tr>
<td>
用户名<input type="text" id="txtname" onfocus="onFocus(this,1)" onblur="onBlur(this,1)"/>
</td>
<td>
<span id="nameshow"></span>
</td>
</tr>
<tr>
<td>
密 码<input id="txtpwd" type="text" onfocus="onFocus(this,2)" onblur="onBlur(this,2)"/>
</td>
<td>
<span id="pwdshow"></span>
</td>
</tr>
<tr>
<td>
确认密码<input id="txtrepwd" type="text" onfocus="onFocus(this,3)" onblur="onBlur(this,3)"/>
</td>
<td>
<span id="repwd"></span>
</td>
</tr>
<tr>
<td>
<input type="submit" id="Sumbit" />
</td>
</tr>
</table>
</form>
</body>
</html>
下面是JS代码var cansumbit=false;
var namevalue=false;
var pwdvalue=false;
var repwdvalue=false;
function onFocus(obj,num)
{
var name=document.getElementById("nameshow");
var pwd=document.getElementById("pwdshow");
var repwd=document.getElementById("repwd");
if(num==1 && cansumbit==false && namevalue==false)
{
name.innerHTML="<font>输入用户名</font>";
}
if(num==2 && cansumbit==false && pwdvalue==false)
{
pwd.innerHTML="<font>输入密码</font>";
}
if(num==3 && cansumbit==false && repwdvalue==false)
{
repwd.innerHTML="<font>再次输入密码</font>";
}
}
function onBlur(obj,num)
{
if(obj.id=="txtname")
{
checkname(obj.value);
}
if(obj.id=="txtpwd")
{
checkpwd(obj.value);
}
if(obj.id=="txtrepwd")
{
checkrepwd(obj.value);
}
}
function createXMLHTTP()
{
if(window.XMLHttpRequest)
{
xmlHttp=new XMLHttpRequest();//mozilla浏览器
}
else if(window.ActiveXObject)
{
try
{
xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");//IE老版本
}
catch(e)
{}
try
{
xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");//IE新版本
}
catch(e)
{}
if(!xmlHttp)
{
window.alert("不能创建XMLHttpRequest对象实例！");
return false;
}
}
}
function checkname(v)
{
namevalue=false;
if(v.length==0)
{
var name=document.getElementById("nameshow");
name.innerHTML="<font>用户名格式不正确</font>";
namevalue=false;
return;
}
if(v.length<6 || v.length>16)
{
var name=document.getElementById("nameshow");
name.innerHTML="<font>用户名由6~16位的数字，字母组成</font>";
namevalue=false;
return;
}
else
{
var tmpFlag = true;
var myReg = /^[_a-z0-9A-Z]+$/;
if( !myReg.test(v))
{
var name=document.getElementById("nameshow");
name.innerHTML="<font>格式不正确</font>";
namevalue=false;
return;
}
else
{
var name=document.getElementById("nameshow");
name.innerHTML="";
namevalue=false;
createXMLHTTP();
var url="Check1.aspx?uid="+v;
xmlHttp.open("get",url,true);
xmlHttp.onreadystatechange = chk_user;
xmlHttp.send(null);
}
}
}
function checkpwd(v)
{
}
function checkrepwd(v)
{
}
function chk_user()
{
if ( xmlHttp.readyState == 4 )
{
if( xmlHttp.status==200 )
{
var xx=xmlHttp.responseText ;
if( xx == "true" )
{
var name=document.getElementById("nameshow");
name.innerHTML = '<img src="UpLoads/20091013095721258.jpg" width="12" height="12" border="0" />';
namevalue=true;
}
else if(xx=="false")
{
var name=document.getElementById("nameshow");
name.innerHTML = '<span><img src="images/err.gif" width="12" height="12" border="0" /> 用户名已被占用,请更换</span>';
namevalue = false;
}
}
}
else
{
var name=document.getElementById("nameshow");
name.innerHTML = '<font color="#999999">检查中...</font>';
}
}
不知道为什么一直就显示检查中，请高手指教！！！！
