人只需不取得标的目标，就不会取得自己。有没有人爱，我们也要努力做一个可爱的人。不埋怨谁，不嘲笑谁，也不羡慕谁，阳光下灿烂，风雨中奔跑，做自己的梦，走自己的路。
序
一个以js验证表单的简洁的注册登录页面，不多说直接上图
效果
主要文件
完整代码
1 sign_up.html 注册表单
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>sign-up</title> <link rel="stylesheet" rel="nofollow noopener noreferrer" href="css/common_form.css"> </head> <body> <header> <div class="header-line"></div> </header> <div class="content"> <img class="content-logo" src="img/form_logo.png" alt="logo"> <h1 class="content-title">创建账户</h1> <div class="content-form"> <form method="post" action="" onsubmit="return submitTest()"> <div id="change_margin_1"> <input class="user" type="text" name="user" placeholder="请输入用户名" onblur="oBlur_1()" onfocus="oFocus_1()"> </div> <!-- input的value为空时弹出提醒 --> <p id="remind_1"></p> <div id="change_margin_2"> <input class="password" type="password" name="password" placeholder="请输入密码" onblur="oBlur_2()" onfocus="oFocus_2()"> </div> <!-- input的value为空时弹出提醒 --> <p id="remind_2"></p> <div id="change_margin_3"> <input class="content-form-signup" type="submit" value="创建账户"> </div> </form> </div> <div class="content-login-description">已经拥有账户？</div> <div><a class="content-login-link" rel="nofollow noopener noreferrer" href="log_in.html">登录</a></div> </div> <script src="js/common_form_test.js"></script> </body> </html>
2 log_in.html 登录表单
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>log-in</title> <link rel="stylesheet" rel="nofollow noopener noreferrer" href="css/common_form.css"> </head> <body> <header> <div class="header-line"></div> </header> <div class="content"> <img class="content-logo" src="img/form_logo.png" alt="logo"> <h1 class="content-title">登录</h1> <div class="content-form"> <form method="post" action="" onsubmit="return submitTest()"> <div id="change_margin_1"> <input class="user" type="text" name="user" placeholder="请输入用户名" onblur="oBlur_1()" onfocus="oFocus_1()"> </div> <!-- input的value为空时弹出提醒 --> <p id="remind_1"></p> <div id="change_margin_2"> <input class="password" type="password" name="password" placeholder="请输入密码" onblur="oBlur_2()" onfocus="oFocus_2()"> </div> <!-- input的value为空时弹出提醒 --> <p id="remind_2"></p> <div id="change_margin_3"> <input class="content-form-signup" type="submit" value="登录"> </div> </form> </div> <div class="content-login-description">没有账户？</div> <div><a class="content-login-link" rel="nofollow noopener noreferrer" href="sign_up.html">注册</a></div> </div> <script src="js/common_form_test.js"></script> </body> </html>
3 common_form.css 表单css样式
/*重置样式*/
html, body, div, span, applet, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr,
acronym, address, big, cite, code, del, dfn, em, img, ins, kbd, q, s, samp, small, strike, strong, sub
, sup, tt, var, b, u, i, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody,
tfoot, thead, tr, th, td, article, aside, canvas, details, embed, figure, figcaption, footer, header,
hgroup, menu, nav, output, section, summary, time, mark, audio, video {
margin: 0;
padding: 0;
border: 0
}
body {
font-family: "微软雅黑";
background: #f4f4f4;
}
/*header*/
.header-line {
width: 100%;
height: 4px;
background: #0dbfdd;
}
/*content*/
.content {
width: 28%;
margin: 70px auto 0;
text-align: center;
}
.content-logo {
width: 80px;
height: 80px;
}
.content-title {
margin: 10px 0 25px 0;
font-size: 2em;
color: #747474;
font-weight: normal;
}
.content-form {
width: 100%;
padding: 36px 0 20px;
border: 1px solid #dedede;
text-align: center;
background: #fff;
}
.content-form form div {
margin-bottom: 19px;
}
.content-form form .user,
.content-form form .password {
width: 77%;
height: 20px;
padding: 10px;
font-size: 1em;
border: 1px solid #cccbcb;
border-radius: 7px;
letter-spacing: 1px;
}
.content-form form input:focus {
outline: none;
-webkit-box-shadow: 0 0 5px #0dbfdd;
box-shadow: 0 0 5px #0dbfdd;
}
.content-form-signup {
width: 84%;
margin: 0 auto;
padding: 10px;
border: 1px solid #cccbcb;
border-radius: 7px;
font-size: 1em;
font-weight: bold;
color: #fff;
background: #0dbfdd;
cursor: pointer;
}
.content-form-signup:hover {
background: #0cb3d0;
}
.content-form-signup:focus {
outline: none;
border: 1px solid #0cb3d0;
}
.content-login-description {
margin-top: 25px;
line-height: 1.63636364;
color: #747474;
font-size: .91666667rem;
}
.content-login-link {
font-size: 16px;
color: #0dbfdd;
text-decoration: none;
}
/*输入框无内容便提示*/
#remind_1,
#remind_2 {
width: 76%;
margin: 0 auto 2px;
text-align: left;
font-size: .2em;
color: #f00;
}
4 common_form_test.js 注册登录脚本
// 全局变量a和b，分别获取用户框和密码框的value值
var a = document.getElementsByTagName("input")[0].value;
var b = document.getElementsByTagName("input")[1].value;
//用户框失去焦点后验证value值
function oBlur_1() {
if (!a) { //用户框value值为空
document.getElementById("remind_1").innerHTML = "请输入用户名！";
document.getElementById("change_margin_1").style.marginBottom = 1 + "px";
} else { //用户框value值不为空
document.getElementById("remind_1").innerHTML = "";
document.getElementById("change_margin_1").style.marginBottom = 19 + "px";
}
}
//密码框失去焦点后验证value值
function oBlur_2() {
if (!b) { //密码框value值为空
document.getElementById("remind_2").innerHTML = "请输入密码！";
document.getElementById("change_margin_2").style.marginBottom = 1 + "px";
document.getElementById("change_margin_3").style.marginTop = 2 + "px";
} else { //密码框value值不为空
document.getElementById("remind_2").innerHTML = "";
document.getElementById("change_margin_2").style.marginBottom = 19 + "px";
document.getElementById("change_margin_3").style.marginTop = 19 + "px";
}
}
//用户框获得焦点的隐藏提醒
function oFocus_1() {
document.getElementById("remind_1").innerHTML = "";
document.getElementById("change_margin_1").style.marginBottom = 19 + "px";
}
//密码框获得焦点的隐藏提醒
function oFocus_2() {
document.getElementById("remind_2").innerHTML = "";
document.getElementById("change_margin_2").style.marginBottom = 19 + "px";
document.getElementById("change_margin_3").style.marginTop = 19 + "px";
}
//若输入框为空，阻止表单的提交
function submitTest() {
if (!a && !b) { //用户框value值和密码框value值都为空
document.getElementById("remind_1").innerHTML = "请输入用户名！";
document.getElementById("change_margin_1").style.marginBottom = 1 + "px";
document.getElementById("remind_2").innerHTML = "请输入密码！";
document.getElementById("change_margin_2").style.marginBottom = 1 + "px";
document.getElementById("change_margin_3").style.marginTop = 2 + "px";
return false; //只有返回true表单才会提交
} else if (!a) { //用户框value值为空
document.getElementById("remind_1").innerHTML = "请输入用户名！";
document.getElementById("change_margin_1").style.marginBottom = 1 + "px";
return false;
} else if (!b) { //密码框value值为空
document.getElementById("remind_2").innerHTML = "请输入密码！";
document.getElementById("change_margin_2").style.marginBottom = 1 + "px";
document.getElementById("change_margin_3").style.marginTop = 2 + "px";
return false;
}
}
5 form_logo.png Logo照片
到这里，一个简单的注册登录页面就完成了，后面会持续更新，使之更强大。
本文原生js验证简洁注册登录页面到此结束。只要努力，你就能成为你想成为的人。小编再次感谢大家对我们的支持！
