本文实例为大家分享了JS实现注册界面表单校验的具体代码，供大家参考，具体内容如下
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<!DOCTYPE html>
<html>
?? ?<head>
?? ??? ?<meta charset="utf-8">
?? ??? ?<title></title>
?? ??? ?<style type="text/css">
?? ??? ??? ?* {
?? ??? ??? ??? ?margin: 0px;
?? ??? ??? ??? ?padding: 0px;
?? ??? ??? ??? ?box-sizing: border-box;
?? ??? ??? ?}
?? ??? ??? ?body {
?? ??? ??? ??? ?background: url(img/register_bg2.png)
?? ??? ??? ??? ??? ?/* no-repeat center */
?? ??? ??? ??? ?;
?? ??? ??? ?}
?? ??? ??? ?.rg_layout {
?? ??? ??? ??? ?width: 900px;
?? ??? ??? ??? ?height: 500px;
?? ??? ??? ??? ?border: 8px solid #EEEEEE;
?? ??? ??? ??? ?background-color: white;
?? ??? ??? ??? ?/* 让div水平居中 */
?? ??? ??? ??? ?margin: auto;
?? ??? ??? ??? ?margin-top: 90px;
?? ??? ??? ?}
?? ??? ??? ?.rg_left {
?? ??? ??? ??? ?/* border: 1px solid red; */
?? ??? ??? ??? ?float: left;
?? ??? ??? ??? ?margin: 15px;
?? ??? ??? ?}
?? ??? ??? ?.rg_left>p:first-child {
?? ??? ??? ??? ?color: #FFD026;
?? ??? ??? ??? ?font-size: 20px;
?? ??? ??? ?}
?? ??? ??? ?.rg_left>p:last-child {
?? ??? ??? ??? ?color: #A6A6A6;
?? ??? ??? ??? ?font-size: 20px;
?? ??? ??? ?}
?? ??? ??? ?.rg_center {
?? ??? ??? ??? ?/* border: 1px solid red; */
?? ??? ??? ??? ?float: left;
?? ??? ??? ??? ?margin-top: 20px;
?? ??? ??? ?}
?? ??? ??? ?.rg_right {
?? ??? ??? ??? ?/* border: 1px solid red; */
?? ??? ??? ??? ?float: right;
?? ??? ??? ??? ?margin: 15px;
?? ??? ??? ?}
?? ??? ??? ?.rg_right>p:first-child {
?? ??? ??? ??? ?font-size: 15px;
?? ??? ??? ?}
?? ??? ??? ?.rg_right p a {
?? ??? ??? ??? ?color: pink;
?? ??? ??? ?}
?? ??? ??? ?.td_left {
?? ??? ??? ??? ?width: 100px;
?? ??? ??? ??? ?text-align: right;
?? ??? ??? ??? ?height: 45px;
?? ??? ??? ?}
?? ??? ??? ?.td_right {
?? ??? ??? ??? ?padding-left: 50px;
?? ??? ??? ?}
?? ??? ??? ?#username,
?? ??? ??? ?#password,
?? ??? ??? ?#email,
?? ??? ??? ?#name,
?? ??? ??? ?#tel,
?? ??? ??? ?#birthday,
?? ??? ??? ?#checkcode {
?? ??? ??? ??? ?width: 251px;
?? ??? ??? ??? ?height: 32px;
?? ??? ??? ??? ?border: 1px solid #A6A6A6;
?? ??? ??? ??? ?/* 设置边框圆角 */
?? ??? ??? ??? ?border-radius: 5px;
?? ??? ??? ??? ?padding-left: 10px;
?? ??? ??? ?}
?? ??? ??? ?#checkcode {
?? ??? ??? ??? ?width: 110px;
?? ??? ??? ?}
?? ??? ??? ?#img_check {
?? ??? ??? ??? ?height: 32px;
?? ??? ??? ??? ?vertical-align: middle;
?? ??? ??? ?}
?? ??? ??? ?#btn_sub {
?? ??? ??? ??? ?width: 150px;
?? ??? ??? ??? ?height: 40px;
?? ??? ??? ??? ?background-color: #FFD026;
?? ??? ??? ??? ?border: 1px solid #FFD026;
?? ??? ??? ?}
?? ??? ??? ?.error {
?? ??? ??? ??? ?color: #FF0000;
?? ??? ??? ?}
?? ??? ??? ?#td_sub {
?? ??? ??? ??? ?padding-left: 150px;
?? ??? ??? ?}
?? ??? ?</style>
?? ??? ?<script type="text/javascript">
?? ??? ??? ?/*?
?? ??? ??? ??? ?分析:
?? ??? ??? ??? ??? ?1.给表单绑定onsubmit事件。监听器中判断每一个方法校验的结果。
?? ??? ??? ??? ??? ??? ?* 如果都为true，则监听器方法返回true
?? ??? ??? ??? ??? ??? ?* 如果有一个为false，则监听器方法返回false
?? ??? ??? ??? ??? ?2.定义一些方法分别校验各个表单项。
?? ??? ??? ??? ??? ?3.给各个表单项绑定onblur事件
?? ??? ??? ??? ?
?? ??? ??? ? */
?? ??? ??? ?window.onload = function() {
?? ??? ??? ??? ?//1.给表单绑定onsubmit事件
?? ??? ??? ??? ?document.getElementById("form").onsubmit = function() {
?? ??? ??? ??? ??? ?//调用用户校验方法 ?checkUsername();
?? ??? ??? ??? ??? ?//调用密码校验方法 ?checkPassword();
?? ??? ??? ??? ??? ?//return checkUsername() && checkPassword();
?? ??? ??? ??? ??? ?return checkUsername() && checkPassword() && checkEmail() && checkName() && checkTel();
?? ??? ??? ??? ?}
?? ??? ??? ??? ?//给文本输入框分别绑定离焦事件
?? ??? ??? ??? ?document.getElementById("username").onblur = checkUsername;
?? ??? ??? ??? ?document.getElementById("password").onblur = checkPassword;
?? ??? ??? ??? ?document.getElementById("email").onblur = checkEmail;
?? ??? ??? ??? ?document.getElementById("name").onblur = checkName;
?? ??? ??? ??? ?document.getElementById("tel").onblur = checkTel;
?? ??? ??? ?}
?? ??? ??? ?//校验用户名
?? ??? ??? ?function checkUsername() {
?? ??? ??? ??? ?//1.获取用户名的值
?? ??? ??? ??? ?var username = document.getElementById("username").value;
?? ??? ??? ??? ?//2.定义正则表达式
?? ??? ??? ??? ?var reg_username = /^\w{6,12}$/;
?? ??? ??? ??? ?//3.判断值是否符合正则的规则
?? ??? ??? ??? ?var flag = reg_username.test(username);
?? ??? ??? ??? ?//4.提示信息
?? ??? ??? ??? ?var s_username = document.getElementById("s_username");
?? ??? ??? ??? ?if (flag) {
?? ??? ??? ??? ??? ?//提示绿色对勾
?? ??? ??? ??? ??? ?s_username.innerHTML = "<img width='35' height='25' src='img/gou.png'/>";
?? ??? ??? ??? ?} else {
?? ??? ??? ??? ??? ?//提示红色用户名有误
?? ??? ??? ??? ??? ?s_username.innerHTML = "用户名格式有误！";
?? ??? ??? ??? ?}
?? ??? ??? ??? ?return flag;
?? ??? ??? ?}
?? ??? ??? ?//校验密码
?? ??? ??? ?function checkPassword() {
?? ??? ??? ??? ?//1.获取用户名的值
?? ??? ??? ??? ?var password = document.getElementById("password").value;
?? ??? ??? ??? ?//2.定义正则表达式
?? ??? ??? ??? ?var reg_password = /^\w{6,12}$/;
?? ??? ??? ??? ?//3.判断值是否符合正则的规则
?? ??? ??? ??? ?var flag = reg_password.test(password);
?? ??? ??? ??? ?//4.提示信息
?? ??? ??? ??? ?var s_password = document.getElementById("s_password");
?? ??? ??? ??? ?if (flag) {
?? ??? ??? ??? ??? ?//提示绿色对勾
?? ??? ??? ??? ??? ?s_password.innerHTML = "<img width='35' height='25' src='img/gou.png'/>";
?? ??? ??? ??? ?} else {
?? ??? ??? ??? ??? ?//提示红色用户名有误
?? ??? ??? ??? ??? ?s_password.innerHTML = "密码格式有误！";
?? ??? ??? ??? ?}
?? ??? ??? ??? ?return flag;
?? ??? ??? ?}
?? ??? ??? ?//检验邮箱
?? ??? ??? ?function checkEmail() {
?? ??? ??? ??? ?var email = document.getElementById("email").value;
?? ??? ??? ??? ?var reg_email = /^([a-zA-Z]|[0-9])(\w|\-)+@[a-zA-Z0-9]+\.([a-zA-Z]{2,4})$/;
?? ??? ??? ??? ?var flag = reg_email.test(email);
?? ??? ??? ??? ?var s_email = document.getElementById("s_email");
?? ??? ??? ??? ?if (flag) {
?? ??? ??? ??? ??? ?s_email.innerHTML = "<img width='35' height='25' src='img/gou.png'/>";
?? ??? ??? ??? ?} else {
?? ??? ??? ??? ??? ?s_email.innerHTML = "邮箱格式有误！";
?? ??? ??? ??? ?}
?? ??? ??? ??? ?return flag;
?? ??? ??? ?}
?? ??? ??? ?//姓名校验
?? ??? ??? ?function checkName() {
?? ??? ??? ??? ?var name = document.getElementById("name").value;
?? ??? ??? ??? ?var reg_name = /^[\u4E00-\u9FA5\uf900-\ufa2d·s]{2,20}$/;
?? ??? ??? ??? ?var flag = reg_name.test(name);
?? ??? ??? ??? ?var s_name = document.getElementById("s_name");
?? ??? ??? ??? ?if (flag) {
?? ??? ??? ??? ??? ?s_name.innerHTML = "<img width='35' height='25' src='img/gou.png'/>";
?? ??? ??? ??? ?} else {
?? ??? ??? ??? ??? ?s_name.innerHTML = "姓名格式有误！";
?? ??? ??? ??? ?}
?? ??? ??? ??? ?return flag;
?? ??? ??? ?}
?? ??? ??? ?//校验手机号
?? ??? ??? ?function checkTel() {
?? ??? ??? ??? ?var tel = document.getElementById("tel").value;
?? ??? ??? ??? ?var reg_tel = /^1(3|4|5|6|7|8|9)\d{9}$/;
?? ??? ??? ??? ?var flag = reg_tel.test(tel);
?? ??? ??? ??? ?var s_tel = document.getElementById("s_tel");
?? ??? ??? ??? ?if (flag) {
?? ??? ??? ??? ??? ?s_tel.innerHTML = "<img width='35' height='25' src='img/gou.png'/>";
?? ??? ??? ??? ?} else {
?? ??? ??? ??? ??? ?s_tel.innerHTML = "手机号格式有误！";
?? ??? ??? ??? ?}
?? ??? ??? ??? ?return flag;
?? ??? ??? ?}
?? ??? ?</script>
?? ?</head>
?? ?<body>
?? ??? ?<div class="rg_layout">
?? ??? ??? ?<div class="rg_left">
?? ??? ??? ??? ?<p>新用户注册</p>
?? ??? ??? ??? ?<p>USER REGISTER</p>
?? ??? ??? ?</div>
?? ??? ??? ?<div class="rg_center">
?? ??? ??? ??? ?<div class="rg_form">
?? ??? ??? ??? ??? ?<!-- 定义表单 -->
?? ??? ??? ??? ??? ?<form action="#" id="form" method="get">
?? ??? ??? ??? ??? ??? ?<table>
?? ??? ??? ??? ??? ??? ??? ?<tr>
?? ??? ??? ??? ??? ??? ??? ??? ?<td class="td_left"><label for="username">用户名</label></td>
?? ??? ??? ??? ??? ??? ??? ??? ?<td class="td_right">
?? ??? ??? ??? ??? ??? ??? ??? ??? ?<input type="text" name="username" id="username" placeholder="请输入用户名">
?? ??? ??? ??? ??? ??? ??? ??? ??? ?<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" id="password" placeholder="请输入密码">
?? ??? ??? ??? ??? ??? ??? ??? ??? ?<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" id="email" placeholder="请输入邮箱">
?? ??? ??? ??? ??? ??? ??? ??? ??? ?<span id="s_email" class="error">
?? ??? ??? ??? ??? ??? ??? ??? ??? ?</span>
?? ??? ??? ??? ??? ??? ??? ??? ?</td>
?? ??? ??? ??? ??? ??? ??? ?</tr>
?? ??? ??? ??? ??? ??? ??? ?<tr>
?? ??? ??? ??? ??? ??? ??? ??? ?<td class="td_left"><label for="name">姓名</label></td>
?? ??? ??? ??? ??? ??? ??? ??? ?<td class="td_right">
?? ??? ??? ??? ??? ??? ??? ??? ??? ?<input type="text" name="name" id="name" placeholder="请输入姓名">
?? ??? ??? ??? ??? ??? ??? ??? ??? ?<span id="s_name" class="error">
?? ??? ??? ??? ??? ??? ??? ??? ??? ?</span>
?? ??? ??? ??? ??? ??? ??? ??? ?</td>
?? ??? ??? ??? ??? ??? ??? ?</tr>
?? ??? ??? ??? ??? ??? ??? ?<tr>
?? ??? ??? ??? ??? ??? ??? ??? ?<td class="td_left"><label for="tel">手机号</label></td>
?? ??? ??? ??? ??? ??? ??? ??? ?<td class="td_right">
?? ??? ??? ??? ??? ??? ??? ??? ??? ?<input type="text" name="tel" id="tel" placeholder="请输入手机号">
?? ??? ??? ??? ??? ??? ??? ??? ??? ?<span id="s_tel" 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" placeholder="请输入出生日期"></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" placeholder="请输入验证码">
?? ??? ??? ??? ??? ??? ??? ??? ??? ?<img id="img_check" src="img/verify_code.jpg">
?? ??? ??? ??? ??? ??? ??? ??? ?</td>
?? ??? ??? ??? ??? ??? ??? ?</tr>
?? ??? ??? ??? ??? ??? ??? ?<tr>
?? ??? ??? ??? ??? ??? ??? ??? ?<td colspan="2" id="td_sub"><input type="submit" id="btn_sub" value="注册"></td>
?? ??? ??? ??? ??? ??? ??? ?</tr>
?? ??? ??? ??? ??? ??? ?</table>
?? ??? ??? ??? ??? ?</form>
?? ??? ??? ??? ?</div>
?? ??? ??? ?</div>
?? ??? ??? ?<div class="rg_right">
?? ??? ??? ??? ?<p>已有账号<a href="#" rel="external nofollow" >立即登录</a></p>
?? ??? ??? ?</div>
?? ??? ?</div>
?? ?</body>
</html>
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。
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