本文实例讲述了jQuery正则验证注册页面功能。分享给大家供大家参考，具体如下：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>正则验证注册页面</title>
<style type="text/css">
.red{
color:#cc0000;
font-weight:bold;
}
</style>
<script type="text/javascript" src="js/jquery-1.8.3.js"></script>
<script language="JavaScript">
function $(elementId){
return document.getElementById(elementId).value;
}
function divId(elementId){
return document.getElementById(elementId);
}
// 用户名验证
function checkUser(){
var user = $("user");
var userId = divId("user_prompt");
userId.innerHTML="";
var reg=/^[a-zA-Z][a-zA-Z0-9]{3,15}$/;
if(reg.test(user)==false){
userId.innerHTML="用户名不正确";
return false;
}
return true;
}
// password check
function checkPwd(){
var pwd = $("pwd");
var pwdId = divId("pwd_prompt");
pwdId.innerHTML="";
var reg = /^[a-zA-Z0-9]{4,10}$/;
if(reg.test(pwd)==false){
pwdId.innerHTML = "密码不能含有非法字符，长度在4-10之间";
return false;
}
return true;
}
function checkRepwd(){
var repwd = $("repwd");
var pwd = $("pwd");
var repwdId = divId("repwd_prompt");
repwdId.innerHTML=""
if(pwd!=repwd){
repwdId.innerHTML="两次密码不一致";
return false;
}
return true;
}
// 邮箱验证
function checkEmail(){
var email = $("email");
var email_prompt = divId("email_prompt");
email_prompt.innerHTML="";
var reg = /^\w+@\w+(\.[a-zA-Z]{2,3}){1,2}$/;
if(reg.test(email)==false){
email_prompt.innerHTML="Email格式不对，请输入正确email";
return false;
}
return true;
}
// 手机号验证
function checkMobile() {
var mobile = $("mobile");
var mobileId = divId("mobile_prompt");
mobileId.innerHTML="";
var reMobile = /^1\d{10}$/;
if (reMobile.test(mobile)==false){
mobileId.innerHTML="手机号输入有误";
return false;
}
return true;
}
// 生日验证
function checkBirth(){
var birth = $("birth");
var birthId = divId("birth_prompt");
birthId.innerHTML="";
var reg = /^((19\d{2})|(200\d))-(0?[1-9]|1[0-2])-(0?[1-9]|[1-2]\d|3[0-1])$/;
if(reg.test(birth)==false){
birthId.innerHTML="生日格式不对";
return false;
}
return true;
}
</script>
</head>
<body>
<table class="main" border="0" callpadding="0" cellspacing="0">
<tr>
<td><img src="images/logo.jpg" alt="logo"><img src="images/banner.jpg" alt="banner"></td>
</tr>
<tr>
<td class="hr_1">新用户注册</td>
</tr>
<tr>
<td style="height: 10px;"></td>
</tr>
<form action="" method="post" name="myform">
<tr>
<td><table>
<tr>
<td class="left">用户名：</td>
<td class="center"><input type="text" id="user" class="in" onblur="checkUser()"></td>
<td><div id="user_prompt">用户名由英文字母和数字组成-4到16位字符，以字母开头</div></td>
</tr>
<tr>
<td class="left">密码：</td>
<td class="center"><input type="password" id="pwd" class="in" onblur="checkPwd()"></td>
<td><div id="pwd_prompt">密码由英文字母和数字组成的4-10位字符</div></td>
</tr>
<tr>
<td class="left">确认密码：</td>
<td class="center"><input type="password" id="repwd" class="in" onblur="checkRepwd()"></td>
<td><div id="repwd_prompt"></div></td>
</tr>
<tr>
<td class="left">电子邮箱：</td>
<td class="center"><input type="text" id="email" class="in" onblur="checkEmail()"></td>
<td><div id="email_prompt"></div></td>
</tr>
<tr>
<td class="left">手机号码：</td>
<td class="center"><input type="text" id="mobile" class="in" onblur="checkMobile()"></td>
<td><div id="mobile_prompt"></div></td>
</tr>
<tr>
<td class="left">生日：</td>
<td class="center"><input type="text " id="birth" class="in" onblur="checkBirth()"></td>
<td><div id="birth_prompt"></div></td>
</tr>
<tr>
<td class="left"> </td>
<td class="center"><input name="" type="image" src="images/register.jpg" /></td>
<td> </td>
</tr>
</table>
</td>
</tr>
</form>
</table>
</body>
</html>
PS：这里再为大家提供2款非常方便的正则表达式工具供大家参考使用：
JavaScript正则表达式在线测试工具： http://tools.jb51.net/regex/javascript
正则表达式在线生成工具： http://tools.jb51.net/regex/create_reg