目录
表单页面展示FormCheck.jsp
CSS样式Register.css
JavaScript代码FormCheck.js
效果图展示
平时我们在注册账号的时候经常看到有提示xxx不得法，请重新填写字样，本文我们就实现以注册页面为例实现表单验证功能。 如果对验证码实现感兴趣的可以看这篇文章：验证码实现 - html页面版
表单页面展示
FormCheck.jsp
<!DOCTYPE html>
< html lang="en">
<head>
<meta charset="UTF-8">
<title>注册页面表单校验
</title>
<link rel="stylesheet" href="../css/register.css">
</head>
<body>
<div class="reg_back">
<div class="reg_left">
<p>新用户注册
</p>
<p>USER REGISTER
</p>
</div>
<div class="reg_center">
<div class="reg_form">
<form action="#" method="post" id="form">
<table>
<tr>
<td class="td_left"><label for="username">用户名
</label></td>
<td class="td_right"><input type="text" name="username" placeholder="请输入用户名(英文字符或数字)"
id="username">
<span id="s_username" class="error"></span>
</td>
</tr>
<tr>
<td class="td_left"><label for="password">密码
</label></td>
<td class="td_right"><input type="password" name="password" placeholder="请输入密码（长度在6~12位之间）"
id="password">
<span id="s_password" class="error"></span>
</td>
</tr>
<tr>
<td class="td_left"><label for="Email">Email
</label></td>
<td class="td_right"><input type="email" name="email" placeholder="请输入Email" id="Email">
<span id="s_email" class="error"></span>
</td>
</tr>
<tr>
<td class="td_left"><label for="rename">姓名
</label></td>
<td class="td_right"><input type="text" name="rename" placeholder="请输入真实姓名（中文姓名）" id="rename">
<span id="s_rename" class="error"></span>
</td>
</tr>
<tr>
<td class="td_left"><label for="Telphone">手机号
</label></td>
<td class="td_right"><input type="text" name="telphone" placeholder="请输入您的手机号"
id="Telphone">
<span id="s_telphone" class="error"></span>
</td>
</tr>
<tr>
<td class="td_left"><label>性别
</label></td>
<td class="td_right"><input type="radio" name="gender" value="male" checked> 男
<input type="radio" name="gender" value="female"> 女
</td>
</tr>
<tr>
<td class="td_left"><label for="Birthday">出生日期
</label></td>
<td class="td_right"><input type="date" name="birthday" id="Birthday"></td>
</tr>
<tr>
<td class="td_left"><label for="checkcode">验证码
</label></td>
<td class="td_right"><input type="text" name="checkcode" id="checkcode">
<img src="../image/10.png" id="img_check"></td>
</tr>
<tr>
<td colspan="2" id="td_sub"><input type="submit" value="注册" id="btn_sub"></td>
</tr>
</table>
</form>
</div>
</div>
<div class="reg_right">
<p>已有账号?
<a href="#">立即登录
</a></p>
</div>
</div>
<script src="../js2/FormCheck.js"></script>
</body>
</ html>
CSS样式
Register.css
* {
margin: 0px
;
padding: 0px
;
box-sizing: border-box
;
}
body {
background: url("../image/9.jpg") no-repeat center
;
background-size: 100% 100%
;
background-attachment:fixed
;
}
.reg_back {
width: 900px
;
height: 400px
;
border: 8px solid #eeeeee
;
background: white
;
margin: auto
;
margin-top: 20px
;
}
.reg_left {
float: left
;
margin: 10px
;
}
.reg_left > p:first-child {
color: yellow
;
font-size: 20px
;
}
.reg_left > p:last-child {
color: #A6A6A6
;
font-size: 20px
;
}
.reg_center {
float: left
;
width: 500px
;
}
.reg_right {
float: right
;
margin: 30px
;
}
.reg_right > p:first-child {
font-size: 15px
;
}
.reg_right p a {
color: crimson
;
}
.td_left {
width: 100px
;
text-align: right
;
height: 40px
;
}
.td_right {
padding-left: 40px
;
}
#username ,#password,#Email, #rename ,#Telphone,#Birthday,#checkcode{
width: 220px
;
height: 30px
;
border: 1px solid #A4A4A4
;
border-radius: 8px
;
padding-left: 10px
;
}
#checkcode{
width: 120px
;
}
#img_check{
vertical-align: middle
;
height: 30px
;
width: 95px
;
}
#btn_sub{
background: lime
;
width: 100px
;
height: 40px
;
border: 1px solid lime
;
}
.error{
color:red
;
}
#td_sub{
padding-left: 150px
;
}
JavaScript代码
FormCheck.js
window
.onload = function () {
document
.getElementById("form").onsubmit = function () {
return checkUsername() && checkPassword() &&checkEmail() && checkRename() && checkTelphone();
}
document
.getElementById("username").onblur
= checkUsername
;
document
.getElementById("password").onblur
= checkPassword
;
document
.getElementById("Email").onblur
= checkEmail
;
document
.getElementById("rename").onblur
= checkRename
;
document
.getElementById("Telphone").onblur
= checkTelphone
;
}
function checkUsername() {
var username
= document
.getElementById("username").value
;
var reg_username
= /^([a-zA-Z0-9_-])/;
var flag
= reg_username
.test(username
);
var s_username
= document
.getElementById("s_username");
if (flag
) {
s_username
.innerHTML
= "<img src='../image/gou.png' width='35' height='25'>";
} else {
s_username
.innerHTML
= "用户名格式有误！";
}
return flag
;
}
function checkPassword(){
var password
= document
.getElementById("password").value
;
var reg_password
= /^\w{6,12}$/;
var flag
= reg_password
.test(password
);
var s_password
= document
.getElementById("s_password");
if(flag
){
s_password
.innerHTML
= "<img width='35' height='25' src='../image/gou.png'/>";
}else{
s_password
.innerHTML
= "密码格式有误";
}
return flag
;
}
function checkEmail(){
var email
= document
.getElementById("Email").value
;
var reg_email
= /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;
var flag
= reg_email
.test(email
);
var s_email
= document
.getElementById("s_email");
if(flag
){
s_email
.innerHTML
= "<img width='35' height='25' src='../image/gou.png'/>";
}else{
s_email
.innerHTML
= "Email格式有误";
}
return flag
;
}
function checkRename(){
var rename
= document
.getElementById("rename").value
;
var reg_rename
= /^[\u4e00-\u9fa5]{2,4}$/;
var flag
= reg_rename
.test(rename
);
var s_rename
= document
.getElementById("s_rename");
if(flag
){
s_rename
.innerHTML
= "<img width='35' height='25' src='../image/gou.png'/>";
}else{
s_rename
.innerHTML
= "真实姓名输入有误";
}
return flag
;
}
function checkTelphone(){
var telphone
= document
.getElementById("Telphone").value
;
var reg_telphone
= /^(((13[0-9]{1})|(15[0-9]{1})|(18[0-9]{1}))+\d{8})$/;
var flag
= reg_telphone
.test(telphone
);
var s_telphone
= document
.getElementById("s_telphone");
if(flag
){
s_telphone
.innerHTML
= "<img width='35' height='25' src='../image/gou.png'/>";
}else{
s_telphone
.innerHTML
= "手机号输入有误";
}
return flag
;
}
效果图展示
好了，我亲爱的读者朋友，以上就是本文的全部内容了！！！
觉得有点用记得给我点赞哦！
通过坚持不懈地学习，持续不断地输出，你的编程基本功算得上是突飞猛进。
为了帮助更多的程序员，专注于分享有趣的 Java 技术编程和有益的程序人生。一开始，阅读量寥寥无几，关注人数更是少得可怜。但随自己的不断努力，阅读量和关注人都在猛烈攀升。
绝对不容错过，期待与你的不期而遇。
