原生js驗證簡潔美觀註冊登錄頁面

序一個以js驗證表單的簡潔的註冊登錄頁面，不多說直接上圖效果主要文件完整代碼 1 sign_up.html 註冊表單 2 log_in.html 登錄表單 3 common_form.css 表單css樣式 4 common_form_test.js 註冊登錄腳本 5 form_logo.p ...

序

一個以js驗證表單的簡潔的註冊登錄頁面，不多說直接上圖

效果

主要文件

完整代碼

1 sign_up.html 註冊表單

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>sign-up</title>
    <link rel="stylesheet" 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">創建賬戶</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="請輸入用戶名" onblur="oBlur_1()" onfocus="oFocus_1()">
                </div>
                <!-- input的value為空時彈出提醒 -->
                <p id="remind_1"></p>
                <div id="change_margin_2">
                    <input class="password" type="password" name="password" placeholder="請輸入密碼" onblur="oBlur_2()" onfocus="oFocus_2()">
                </div>
                <!-- input的value為空時彈出提醒 -->
                <p id="remind_2"></p>
                <div id="change_margin_3">
                    <input class="content-form-signup" type="submit" value="創建賬戶">
                </div>
            </form>
        </div>
        <div class="content-login-description">已經擁有賬戶？</div>
        <div><a class="content-login-link" href="log_in.html">登錄</a></div>
    </div>
<script src="js/common_form_test.js"></script>
</body>
</html>

2 log_in.html 登錄表單

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>log-in</title>
    <link rel="stylesheet" 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">登錄</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="請輸入用戶名" onblur="oBlur_1()" onfocus="oFocus_1()">
                </div>
                <!-- input的value為空時彈出提醒 -->
                <p id="remind_1"></p>
                <div id="change_margin_2">
                    <input class="password" type="password" name="password" placeholder="請輸入密碼" onblur="oBlur_2()" onfocus="oFocus_2()">
                </div>
                <!-- input的value為空時彈出提醒 -->
                <p id="remind_2"></p>
                <div id="change_margin_3">
                    <input class="content-form-signup" type="submit" value="登錄">
                </div>
            </form>
        </div>
        <div class="content-login-description">沒有賬戶？</div>
        <div><a class="content-login-link" href="sign_up.html">註冊</a></div>
    </div>
<script src="js/common_form_test.js"></script>
</body>
</html>

3 common_form.css 表單css樣式

/*重置樣式*/
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: "微軟雅黑";
    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;
}

/*輸入框無內容便提示*/
#remind_1,
#remind_2 {
    width: 76%;
    margin: 0 auto 2px;
    text-align: left;
    font-size: .2em;
    color: #f00;
}

4 common_form_test.js 註冊登錄腳本

// 全局變數a和b，分別獲取用戶框和密碼框的value值
var a = document.getElementsByTagName("input")[0].value;
var b = document.getElementsByTagName("input")[1].value;

//用戶框失去焦點後驗證value值
function oBlur_1() {
    if (!a) { //用戶框value值為空
        document.getElementById("remind_1").innerHTML = "請輸入用戶名！";
        document.getElementById("change_margin_1").style.marginBottom = 1 + "px";
    } else { //用戶框value值不為空
        document.getElementById("remind_1").innerHTML = "";
        document.getElementById("change_margin_1").style.marginBottom = 19 + "px";
    }
}

//密碼框失去焦點後驗證value值
function oBlur_2() {
    if (!b) { //密碼框value值為空
        document.getElementById("remind_2").innerHTML = "請輸入密碼！";
        document.getElementById("change_margin_2").style.marginBottom = 1 + "px";
        document.getElementById("change_margin_3").style.marginTop = 2 + "px";
    } else { //密碼框value值不為空
        document.getElementById("remind_2").innerHTML = "";
        document.getElementById("change_margin_2").style.marginBottom = 19 + "px";
        document.getElementById("change_margin_3").style.marginTop = 19 + "px";
    }
}

//用戶框獲得焦點的隱藏提醒
function oFocus_1() {
    document.getElementById("remind_1").innerHTML = "";
    document.getElementById("change_margin_1").style.marginBottom = 19 + "px";
}

//密碼框獲得焦點的隱藏提醒
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";
}

//若輸入框為空，阻止表單的提交
function submitTest() {
    if (!a && !b) { //用戶框value值和密碼框value值都為空
        document.getElementById("remind_1").innerHTML = "請輸入用戶名！";
        document.getElementById("change_margin_1").style.marginBottom = 1 + "px";
        document.getElementById("remind_2").innerHTML = "請輸入密碼！";
        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表單才會提交
    } else if (!a) { //用戶框value值為空
        document.getElementById("remind_1").innerHTML = "請輸入用戶名！";
        document.getElementById("change_margin_1").style.marginBottom = 1 + "px";
        return false;
    } else if (!b) { //密碼框value值為空
        document.getElementById("remind_2").innerHTML = "請輸入密碼！";
        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

到這裡，一個簡單的註冊登錄頁面就完成了，後面會持續更新，使之更強大