HTML+CSS+JS登录注册页面（媒体查询自适应）

发布于：2022-12-22 ⋅ 阅读:(607) ⋅ 点赞:(0)
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今天分享一个登录注册页面，正好在学习媒体查询，在此记录一下。、

目录

一、页面展示

二、准备

三、代码部分

1.HTML

2.CSS

 3.JS

四、尾语

一、页面展示

二、准备

引入谷歌字体@import url('https://fonts.font.im/css?family=Poppins');

左上方logo为html5标志图片，也可使用其他图片根据自己的喜好，或者是引入图标库

boxincons图标库：

<link href='https://unpkg.com/boxicons@2.1.2/css/boxicons.min.css' rel='stylesheet'>

 Boxicons : Premium web friendly icons for free

三、代码部分

1.HTML

（1）autocomplete属性： on或off。on: 表单有自动完成功能。off: 表单无自动完成功能。注：autocomplete属性不仅可以用于form元素，还可以用于所以输入类型的input元素。

（2）minlength属性用来指定文本框或 textarea 中，允许输入的最少字符数。一个汉字被看作一个字符。在以下文本框中，用户最少要输入 4个字符，同理maxlength为输入的最多字符。

（3）required属性为html5的新属性，定义及用法：required 属性是一个布尔属性，规定必需在提交之前填写输入字段。如果使用该属性，则字段是必填（或必选）的。

（4）bullets：自定义轮播图指示点（indicator-dots），定义data-value给指示点赋值

<main>
        <div class="box">
            <div class="inner_box">
                <div class="forms_wrap">
                    <form action="login2.html" autocomplete="off" class="login_form">
                        <div class="logo">
                            <!-- <i class='bx bxl-html5 bx-lg'></i> -->
                            <img src="/login_template//login2/HTML5.jpg">
                            <h4>easyclass</h4>
                        </div>
                        <div class="heading">
                            <h2>欢迎回来</h2>
                            <h6>还没有注册？</h6>
                            <a href="#" class="toggle">去注册</a>
                        </div>
                        <div class="actual_form">
                            <div class="input_wrap">
                                <input type="text" minlength="4" class="input_field" autocomplete="off" required>
                                <label>账号</label>
                            </div>
                            <div class="input_wrap">
                                <input type="password" minlength="4" class="input_field" autocomplete="off" required>
                                <label>密码</label>
                            </div>
                            <input type="submit" value="注册" class="sign_btn">
                            <p class="text">
                                忘记账号或密码，<a href="#">点击</a>找回
                            </p>
                        </div>
                    </form>
                    <form action="login2.html" autocomplete="off" class="register_form">
                        <div class="logo">
                            <!-- <i class='bx bxl-html5 bx-lg'></i> -->
                            <img src="/login_template//login2/HTML5.jpg">
                            <h4>easyclass</h4>
                        </div>
                        <div class="heading">
                            <h2>开始吧</h2>
                            <h6>已有账号？</h6>
                            <a href="#" class="toggle">去登录</a>
                        </div>
                        <div class="actual_form">
                            <div class="input_wrap">
                                <input type="text" minlength="4" class="input_field" autocomplete="off" required>
                                <label>账号</label>
                            </div>
                            <div class="input_wrap">
                                <input type="email" class="input_field" autocomplete="off" required>
                                <label>邮箱</label>
                            </div>
                            <div class="input_wrap">
                                <input type="password" minlength="4" class="input_field" autocomplete="off" required>
                                <label>密码</label>
                            </div>
                            <div class="input_wrap">
                                <input type="password" minlength="4" class="input_field" autocomplete="off" required>
                                <label>再次输入密码</label>
                            </div>
                            <input type="submit" value="注册" class="sign_btn">
                            <p class="text">
                                通过注册，我同意<a href="#">服务</a>和<a href="#">隐私政策</a>
                            </p>
                        </div>
                    </form>
                </div>
                <div class="carousel">
                    <div class="images_wrapper">
                        <img src="/login_template/login2/img/gallery-img/2.jpg" class="image img1 show" alt="">
                        <img src="/login_template/login2/img/gallery-img/3.jpg" class="image img2" alt="">
                        <img src="/login_template/login2/img/gallery-img/4.jpg" class="image img3" alt="">
                    </div>
                    <div class="text_slider">
                        <div class="text_wrapper">
                            <div class="text_group">
                                <h2>创建属于自己的账号</h2>
                                <h2>打造专属个人空间</h2>
                                <h2>分享多彩生活</h2>
                            </div>
                        </div>
                        <div class="bullets">
                            <span class="active" data-value="1"></span>
                            <span data-value="2"></span>
                            <span data-value="3"></span>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </main>

2.CSS

（1）::before ::after伪元素，css3为了区分伪类和伪元素，伪元素采用双冒号写法。::before和::after下特有的content，用于在css渲染中向元素逻辑上的头部或尾部添加内容。

 （2）rem，rem是相对长度单位，相对于根元素（即html元素）的font-size计算值的倍数。px像素（Pixel）。相对长度单位。像素px是相对于显示器屏幕分辨率而言的。rem可以更好解决媒体查询自适应问题。rem与px的转换：假设我们设置html的字体大小的值为html｛font-size: 87.5%;｝（也就是14px）。然后其他的字体就是将你要的值除以14得到的值；比如默认的twentytwelve主题大小是960px；换算成rem就是960/14=68.57142857142857rem；padding的24px也就是24/14=1.714285714285714rem。

（3）display:grid ，设置该元素为网格容器，grid-template-columns： 列宽，grid-template-rows：行宽。详细讲解请看http://t.csdn.cn/pTEqf

@import url('https://fonts.font.im/css?family=Poppins');

*,
*::before,
*::after {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
}

main {
    width: 100%;
    min-height: 100vh;
    overflow: hidden;
    background-color: #ff8c6b;
    padding: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.box {
    position: relative;
    width: 100%;
    max-width: 820px;
    height: 540px;
    background-color: #fff;
    border-radius: 3.3rem;
    box-shadow: 0 60px 40px -30px rgba(0, 0, 0, 0.3);
}

.inner_box {
    position: absolute;
    width: calc(100% - 4.1rem);
    height: calc(100% - 4.1rem);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    /* background-color: red; */
}

.forms_wrap {
    position: absolute;
    height: 100%;
    width: 45%;
    top: 0;
    left: 0;
    /* background-color: green; */
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
    transition: 0.8s ease-in-out;
}

.carousel {
    position: absolute;
    height: 100%;
    width: 55%;
    top: 0;
    left: 45%;
    background-color: #ffe0d2;
    border-radius: 2rem;
    display: grid;
    grid-template-rows: auto 1fr;
    overflow: hidden;
    transition: 0.8s ease-in-out;
}

form {
    /* border: 2px solid #000; */
    max-width: 260px;
    width: 100%;
    /* background-color: red; */
    margin: 0 auto;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-evenly;
    grid-column: 1 / 2;
    grid-row: 1 / 2;
    transition: opacity 0.02s 0.4s;
}

/* form.login_form{
    display: none;
} */
form.register_form {
    opacity: 0;
    pointer-events: none;
}

.logo {
    /* border: 2px solid #000; */
    display: flex;
    align-items: center;
}

.logo img {
    width: 35px;
    margin: 0.3rem;
}

.logo h4 {
    font-size: 1.2rem;
    font-weight: 800;
    margin-top: -5px;
    letter-spacing: -0.5px;
    color: #151111;
}

.heading {
    text-align: center;
}

.heading h2 {
    font-size: 2.1rem;
    font-weight: 600;
    color: #151111;
}

.heading h6 {
    color: #bababa;
    font-weight: 400;
    font-size: 0.9rem;
    display: inline;
}

.toggle {
    color: #151111;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 700;
    transition: 0.3s;
}

.toggle:hover {
    color: #8371fd;
}

.input_wrap {
    position: relative;
    height: 37px;
    margin-bottom: 2rem;
    /* background-color: red; */
}

.input_field {
    position: absolute;
    width: 100%;
    height: 100%;
    background: none;
    border: none;
    outline: none;
    border-bottom: 1px solid #bbb;
    padding: 0;
    font-size: 0.95rem;
    color: #151111;
    transition: 0.4s;
}

label {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.95rem;
    color: #bbb;
    pointer-events: none;
    transition: 0.4s;
}

.input_field.active {
    border-bottom-color: #151111;
}

.input_field.active+label {
    font-size: 0.75rem;
    top: -2px;
}

.sign_btn {
    height: 2.5rem;
    width: 100%;
    background-color: #151111;
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 15px;
    cursor: pointer;
    transition: 0.3s;
}

.sign_btn:hover {
    background-color: #8371fd;
}

.text {
    color: #bbb;
    font-size: 0.8rem;
    text-align: center;
    margin-top: 10px;
}

.text a {
    color: #151111;
    transition: 0.3s;
    text-decoration: none;
}

.text a:hover {
    color: #8371fd;
}

main.sign_up_mode .forms_wrap {
    left: 55%;
}

main.sign_up_mode .carousel {
    left: 0;
}

main.sign_up_mode form.login_form {
    opacity: 0;
    pointer-events: none;
}

main.sign_up_mode form.register_form {
    opacity: 1;
    pointer-events: all;
}

.images_wrapper {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
}

.image {
    width: 100%;
    height: 300px;
    grid-column: 1/2;
    grid-row: 1/2;
    opacity: 0;
    transition: opacity 0.3s, transform 0.5s;
}

.img1 {
    transform: translate(0, -50px);
}

.img2 {
    transform: scale(0.4, 0.5);
}

.img3 {
    transform: scale(0.3) rotate(-20deg);
}

.image.show {
    opacity: 1;
    transform: none;
}

.text_slider {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    /* margin-top: 5rem; */
}

.text_wrapper {
    max-height: 2.2rem;
    overflow: hidden;
    margin-bottom: 2.5rem;
}

.text_group {
    display: flex;
    flex-direction: column;
    text-align: center;
    transform: translateY(0);
    transition: 0.3s;
}

.text_group h2 {
    /* line-height: 2.2rem; */
    font-weight: 600;
    font-size: 1.55rem;
}

.bullets {
    display: flex;
    align-items: center;
    justify-content: center;
}

.bullets span {
    display: block;
    width: 0.5rem;
    height: 0.5rem;
    background-color: #aaa;
    margin: 0 0.25rem;
    border-radius: 50%;
    cursor: pointer;
    transition: 0.3s;
}

.bullets span.active {
    width: 1.1rem;
    background-color: #151111;
    border-radius: 1rem;
}

@media (max-width:850px) {
    .box {
        height: auto;
        max-width: 550px;
        overflow: hidden;
    }

    .inner_box {
        position: static;
        transform: none;
        width: revert;
        height: revert;
        padding: 2rem;
    }

    .forms_wrap {
        position: revert;
        width: 100%;
        height: auto;
    }

    form {
        max-width: revert;
        padding: 1.5rem 2.5rem 2rem;
        transition: transform 0.8s ease-in-out, opacity 0.45s linear;
    }

    .heading {
        margin: 2rem 0;
    }

    form.register_form {
        transform: translateX(100%);
    }

    main.sign_up_mode form.login_form {
        transform: translateX(-100%);
    }

    main.sign_up_mode form.register_form {
        transform: translateX(0);
    }

    .carousel {
        position: revert;
        width: 100%;
        height: auto;
        padding: 3rem 2rem;
        display: flex;
    }

    .images_wrapper {
        display: none;
    }

    .text_slider {
        width: 100%;
    }
}

@media(max-width:530px) {
    main {
        padding: 1rem;
    }

    .box {
        border-radius: 2rem;
    }

    .inner_box {
        padding: 1rem;
    }

    .carousel {
        padding: 1.5rem 1rem;
        border-radius: 1.6rem;
    }

    .text_wrapper {
        margin-bottom: 1rem;
    }

    .text_group h2 {
        font-size: 1.4rem;
    }

    form {
        padding: 1rem 2rem 1.5rem;
    }
}

 3.JS

（1）获取组件

        constinput = document.querySelectorAll(".input_field");
        const toggle_btn = document.querySelectorAll(".toggle");
        const main = document.querySelector("main");
        const bullets = document.querySelectorAll(".bullets span");
        const images = document.querySelectorAll(".image");

（2） input.forEach遍历显示输入框的样式，也可直接定义输入框的点击事件。moveSlider方法为点击指示点轮播图变换方法（思路可以学习一下）

        const input = document.querySelectorAll(".input_field");
        const toggle_btn = document.querySelectorAll(".toggle");
        const main = document.querySelector("main");
        const bullets = document.querySelectorAll(".bullets span");
        const images = document.querySelectorAll(".image");
        input.forEach((inp) => {
            inp.addEventListener("focus", () => {
                inp.classList.add("active");
            });
            inp.addEventListener("blur", () => {
                if (inp.value != "") return;
                inp.classList.remove("active");
            });
        });
        toggle_btn.forEach((btn) => {
            btn.addEventListener("click", () => {
                main.classList.toggle("sign_up_mode");
            });
        });
        bullets.forEach((bullets) => {
            bullets.addEventListener("click", moveSlider);
        });
        function moveSlider() {
            let index = this.dataset.value;
            let currentImage = document.querySelector(`.img${index}`);

            images.forEach(img => img.classList.remove("show"));
            currentImage.classList.add("show");

            const textSlider = document.querySelector(".text_group");
            textSlider.style.transform = `translateY(${-(index - 1) * 2.2}rem)`;
            
            bullets.forEach(bull => bull.classList.remove("active"));
            this.classList.add("active");
        }

四、尾语

以上为全部内容，请大家参考！

如有问题可私信，欢迎探讨！

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