AJAX用户注册演示程序

来源:互联网 时间:1970-01-01

用户注册演示程序

<! 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="网页特效" type="text/网页特效">

<!--

//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教程"; //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("confirmpassword").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_-])[email protected]([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!!");

m.email.focus();

return false;

}

m.submit();

}

//-->

</script>

<body >

<form name="form1" method="post" action="register.php">

<h3 align="center">ajax用户注册程序</h3>

<table align="center" width="500" border="1" >

<tr>

<td><font color="red">*</font></td>

<td width="100">用户帐号:</td>

<td><input type="text" name="username" maxlength="20" style="background=#ffffff" onblur="chkuser()"></td>

<td><div id="showstr" style="background-color:#ff9900;display:none"></div></td>

</tr>

<tr>

<td><font color="red">*</font></td>

<td>用户密码:</td>

<td align="left"><input type="password" name="password" maxlength="22" style="background=#ffffff" onblur="chkpassword()"/> </td>

<td><div id="passwordstr" style="background-color:#ff9900;display:none"></div></td>

</tr>

<tr>

<td><font color="red">*</font></td>

<td>确认密码:</td>

<td><input type="password" name="confirmpassword" maxlength="20" style="background=#ffffff" onblur="chkconfirmpassword()"/></td>

<td><div id="confirmpasswordstr" style="background-color:#ff9900;display:none"></div></td>

</tr>

<tr>

<td><font color="red">*</font></td>

<td>email:</td>

<td><input type="text" name="email" maxlength="100" style="background=#ffffff" onblur="chkemail()"></td>

<td><div id="emailstr" style="background-color:#ff9900;display:none"></div></td>

</tr>

</table>

<div align="center">

<input type="button" name="ok" value=" 确定 " onclick="submitcheck()">

<input type="reset" name="reset" value=" 取消 ">

</form>

</div>

</body>

</html>reg.php检测程序

<?php

header("content-type:text/html;charset=gb2312");

@mysql教程_connect('localhost','root','ebaeba') or die("数据库教程服务器连接失败");

@mysql_select_db("test") or die("数据库不存在或不可用");

$uname = $_get['username'];

//下面进行数据库查询 查找是不是有这一个用户

//如果没有查找到这个用户名

$sql="select * from t1 where name='".$uname."'";

$query=mysql_query($sql);

$row=mysql_fetch_object($query);

if(strlen($uname)<6||strlen($uname)>20)

{

$msg="用户名必须是6至20个字符.";

}

else

{

if($row==false)

{

$msg="该用户名有效,可以使用!";

}

else

{

$msg="对不起,此用户名已经存在,请更换用户名注册!";

}

}

echo $msg ;

?>


相关阅读:
Top