JS对注册页面进行表单校验

页面效果

校验效果：

FormCheck.html

< html lang="en">

新用户注册

USER REGISTER

用户名
密码
Email
姓名
手机号
性别	男 女
出生日期
验证码

已有账号?立即登录

</ html>

Register.css

* {
margin: 0px;
padding: 0px;
box-sizing: border-box;
}

body {
background: url("../image/9.jpg") no-repeat center;
/设置图片适应整个页面/
background-size: 100% 100%;
background-attachment:fixed;
}

.reg_back {
/设置整体的尺寸、背景色、边距等/
width: 900px;
height: 400px;
border: 8px solid #eeeeee;
background: white;
margin: auto;
margin-top: 20px;
}

.reg_left {
/设置左浮动和外边距/
float: left;
margin: 10px;
}

.reg_left > p:first-child {
/设置段落（新用户注册）颜色和字体大小/
color: yellow;
font-size: 20px;
}

.reg_left > p:last-child {
/设置段落（USER REGISTER）颜色和字体大小/
color: #A6A6A6;
font-size: 20px;
}

.reg_center {
/设置中间的各种输入框等/
float: left;
width: 500px;
}

.reg_right {
/设置右边段落浮动和外间距/
float: right;
margin: 30px;
}

.reg_right > p:first-child {
font-size: 15px;
}

.reg_right p a {
/设置超链接（立即登录）颜色/
color: crimson;
}

.td_left {
/设置表单中字体对齐方式和宽度、高度/
width: 100px;
text-align: right;
height: 40px;
}

.td_right {
/设置输入框内边距/
padding-left: 40px;
}

username ,#password,#Email, #rename ,#Telphone,#Birthday,#checkcode{

/设置输入框大小和边框/
width: 220px;
height: 30px;
border: 1px solid #A4A4A4;
/* 设置边框为圆角 /
border-radius: 8px;
padding-left: 10px;
}
#checkcode{
/验证码宽度/
width: 120px;
}
#img_check{
/验证码图片/
vertical-align: middle;
height: 30px;
width: 95px;
}
#btn_sub{
/注册按钮*/
background: lime;
width: 100px;
height: 40px;
border: 1px solid lime ;
}
.error{
color:red;
}
#td_sub{
padding-left: 150px;
}

FormCheck.js

window.onload = function () {
//给表单绑定onsubmit事件
document.getElementById("form").onsubmit = function () {
return checkUsername() && checkPassword() &&checkEmail() && checkRename() && checkTelphone();
}

//给用户名和密码框、Email、姓名、手机号分别绑定离焦事件
document.getElementById("username").onblur = checkUsername;
document.getElementById("password").onblur = checkPassword;
document.getElementById("Email").onblur = checkEmail;
document.getElementById("rename").onblur = checkRename;
document.getElementById("Telphone").onblur = checkTelphone;
}

//校验用户名
function checkUsername() {
//获取用户名的值
var username = document.getElementById("username").value;

//定义正则表达式
var reg_username = /^([a-zA-Z0-9_-])/;
//判断值是否符合正则表达式的规则
var flag = reg_username.test(username);

//提示信息
var s_username = document.getElementById("s_username");

if (flag) {
//提示绿色对勾
s_username.innerHTML = "";
} else {
//提示红色错误信息
s_username.innerHTML = "用户名格式有误！";
}
return flag;
}

//校验密码
function checkPassword(){
//1.获取密码的值
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 = "";
}else{
//提示红色错误信息
s_password.innerHTML = "密码格式有误";
}
return flag;
}
//校验Email
function checkEmail(){
//1.获取Email的值
var email = document.getElementById("Email").value;
//2.定义正则表达式
var reg_email = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(.[a-zA-Z0-9_-])+/;
//3.判断值是否符合正则的规则
var flag = reg_email.test(email);
//4.提示信息
var s_email = document.getElementById("s_email");

if(flag){
//提示绿色对勾
s_email.innerHTML = "";
}else{
//提示红色错误信息
s_email.innerHTML = "Email格式有误";
}
return flag;
}
//校验真实姓名
function checkRename(){
//1.获取真实姓名的值
var rename = document.getElementById("rename").value;
//2.定义正则表达式
var reg_rename = /^[1]{2,4}$/;
//3.判断值是否符合正则的规则
var flag = reg_rename.test(rename);
//4.提示信息
var s_rename = document.getElementById("s_rename");

if(flag){
//提示绿色对勾
s_rename.innerHTML = "";
}else{
//提示红色错误信息
s_rename.innerHTML = "真实姓名输入有误";
}
return flag;
}
//校验手机号
function checkTelphone(){
//1.获取手机号的值
var telphone = document.getElementById("Telphone").value;
//2.定义正则表达式
var reg_telphone = /^(((13[0-9]{1})|(15[0-9]{1})|(18[0-9]{1}))+\d{8})$/;
//3.判断值是否符合正则的规则
var flag = reg_telphone.test(telphone);
//4.提示信息
var s_telphone = document.getElementById("s_telphone");

if(flag){
//提示绿色对勾
s_telphone.innerHTML = "";
}else{
//提示红色错误信息
s_telphone.innerHTML = "手机号输入有误";
}
return flag;
}

背景图片

验证码图片

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1. \u4e00-\u9fa5 ↩︎