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[前端]实际开发案例

作者:小教学发布时间:2023-09-19分类:程序开发学习浏览:66


导读:文章目录1.侧边栏2.调查报告3.显示隐藏遮罩案列4.鼠标经过,图片放大5.奔跑的熊6.旋转木马7.百度换肤8.标签栏切换9.下拉菜单10.发布留言11.动态生成表格12.图片跟随...

文章目录

  • 1.侧边栏
  • 2.调查报告
  • 3.显示隐藏遮罩案列
  • 4.鼠标经过,图片放大
  • 5.奔跑的熊
  • 6.旋转木马
  • 7.百度换肤
  • 8.标签栏切换
  • 9.下拉菜单
  • 10.发布留言
  • 11.动态生成表格
  • 12.图片跟随鼠标移动
  • 13.按键输入内容
  • 14.定时器实现
  • 15.发送短信
  • 16.5秒后跳转页面
  • 17.获取URL参数数据
  • 18.(拖动模态框(登陆界面)
  • 19.放大镜效果
  • 20.仿淘宝固定侧边栏
  • 21.轮播图
  • 22.导航栏背景图移动
  • 23.记住用户名

1.侧边栏

鼠标经过时,变色

<!DOCTYPE html>
<html lang="Cn_zh">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>选择器</title>
    <style>
        div {
            display: inline-block;
            width: 200px;
            height: 300px;
            background-color: rgb(224, 118, 118);
        }
        a {
            display: inline-block;
            text-decoration: none;
            width: 200px;
            height: 50px;
            font-size: 20px;
            text-indent: 2em;
            line-height: 50px;
            color: rgb(248, 241, 241);
            background-color: rgb(83, 87, 88);
        }
        a:hover {
            background-color: rgb(225, 111, 0);
        }
    </style>
</head>
    <div>
        <a href="#">手机</a>
        <a href="#">电视</a>
        <a href="#">笔记本</a>
        <a href="#">出行</a>
        <a href="#">智能</a>
        <a href="#">健康</a>
        <a href="#">耳机</a>
    </div>
</body>
</html>

[前端]实际开发案例

2.调查报告

基础的表单实例

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>综合案列</title>
    <style>
    
        input:focus {
            /* color: pink; */
            background-color: rgb(100, 223, 18);
        }
    </style>
</head>
<body >
    <table cellspacing="10" width="600" >
        <tr><td colspan="2"><h4>青春不常在,抓紧谈恋爱</h4></td></tr>
        <!-- 第一行 -->
        <tr>
            <td>性别</td> 
            <td><input type="radio" required="required "  name="xingbie" id=""/> <label for=""><img src="图片/桌面GIF图标/性别男.jpg" width="25"/></label> &nbsp;<input type="radio" name="xingbie" id=""/> <label for=""><img src="图片/桌面GIF图标/性别女.jpg" width="25"/></label></td>
        </tr>
        <!-- 第二行 -->
        <tr>
            <td class="red">生日</td>
            <td>
                <select>
                    <option>---请选择年---</option>
                    <option>1991年</option> <option>1992年</option> <option>1993年</option> 
                    <option>1994年</option> <option>1995年</option> <option>1996年</option>
                    <option>1997年</option> <option>1998年</option> <option>1999年</option>
                    <option>2000年</option> <option>2001年</option> <option>2002年</option>
                    <option>2003年</option> <option>2004年</option> <option>2005年</option>
                    <option>2006年</option> <option>2007年</option> <option>2008年</option>
                    <option>2009年</option> <option>2010年</option> <option>2011年</option>
                    <option>2012年</option> <option>2013年</option> <option>2014年</option>
                    <option>2015年</option> <option>2016年</option> <option>2017年</option>
                    <option>2018年</option> <option>2019年</option> <option>2020年</option>
                    <option>2021年</option> <option>2022年</option> 
                </select> 
                <select>
                    <option>---请选择月---</option>
                    <option>1月</option> <option>2月</option> <option>3月</option>
                    <option>4月</option> <option>5月</option> <option>6月</option>
                    <option>7月</option> <option>8月</option> <option>9月</option>
                    <option>10月</option> <option>11月</option> <option>12月</option>
                </select> 
                <select>
                    <option>---请选择日---</option>
                    <option>1日</option> <option>2日</option> <option>3日</option> <option>4日</option> <option>5日</option>
                    <option>6日</option> <option>7日</option> <option>8日</option> <option>9日</option> <option>10日</option>
                    <option>11日</option> <option>12日</option> <option>13日</option> <option>14日</option> <option>15日</option>
                    <option>16日</option> <option>17日</option> <option>18日</option> <option>19日</option> <option>20日</option>
                    <option>21日</option> <option>22日</option> <option>23日</option> <option>24日</option> <option>25日</option> 
                    <option>26日</option> <option>27日</option> <option>28日</option> <option>29日</option> <option>30日</option> <option>31日</option>
                </select>
            </td>
        </tr>
        <!-- 第三行 -->
        <tr><td>所在地区</td><td><input type="text" /></td></tr>
        <!-- 第四行 -->
        <tr>
            <td>婚姻情况</td>
            <td>
                <input type="radio" name="hunyin" id="未婚"/> <label for="未婚">未婚</label> &nbsp;
                <input type="radio" name="hunyin" id="已婚"/> <label for="已婚">已婚</label> &nbsp;
                <input type="radio" name="hunyin" id="离婚"/> <label for="离婚">离婚</label> &nbsp;
            </td>
        </tr>
        <!-- 第五行 -->
        <tr><td>学历</td><td><input type="text" /></td></tr>
        <!-- 第六行 -->
        <tr>
            <td>喜欢的水果</td>
            <td>
                <input type="checkbox" name="hunyin" id="1"/> <label for="1">苹果</label> &nbsp;
                <input type="checkbox" name="hunyin" id="2"/> <label for="2">橘子</label> &nbsp;
                <input type="checkbox" name="hunyin" id="3"/> <label for="3">葡萄</label> &nbsp;
                <input type="checkbox" name="hunyin" id="4"/> <label for="4">梨子</label> &nbsp;
                <input type="checkbox" name="hunyin" id="5"/> <label for="5">芒果</label> &nbsp;
            </td>
        </tr>
        <tr>
            <tb>
                <input type="file" multiple:"multiple" name="hunyin" id="1" /> <label for="1">上传资源</label>
            </tb>
        </tr>
        <!-- 第七行 -->
        <tr>
            <td>自我介绍</td>
            <td>
                <textarea rows="3" cols="20"></textarea>
            </td>
        </tr>
        <!-- 第八行 -->
        <tr>
            <td></td><td>
                <input type="submit" value="免费注册"/> <br>
                <input type="checkbox" checked="checked" id="同意"/> <label for="同意">我同意注册条款和会员加入标准</label> <br>
                <a href="#">我是会员,立即登录</a>
            </td>
        </tr>
        <!-- 第九行 -->
        <tr>
            <td></td><td>
                <h3>我承诺</h3>
                <ul>
                    <li>年满18岁,单身</li>
                    <li>把着严肃的态度</li>
                    <li>真诚寻找另一半</li>
                </ul>
            </td>
        </tr>
    </table>
</body>
</html>

[前端]实际开发案例

3.显示隐藏遮罩案列

鼠标在上面显示播放图标

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>仿土豆网显示隐藏遮罩案列</title>>

    <style>
        * {
            margin: 0;
            padding: 0;
        }

        .tudou {
            position: relative;
            width:444px;
            height: 320px;
            background-color: pink;
            margin: 30px auto;
        }

        .tudou img {
            width: 100%;
            height: 100%;
        }

        .mask {
            /* 隐藏 */
            display: none;
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, .4) url(图片/播放图标.png) no-repeat center;
        }

        .tudou:hover .mask {
            /* 显示 */
            display: block;
        }
    </style>
</head>
<body>
    <div class="tudou">
        <div class="mask"></div>
        <img src="http://t15.baidu.com/it/u=1810572718,3307870279&fm=224&app=112&f=JPEG?w=350&h=350" alt="">
    </div>
</body>

</html>

[前端]实际开发案例

4.鼠标经过,图片放大

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>2D动画之图片放大</title>
    <style>
        
        .doxss {
            overflow: hidden;
            margin: 10px;
            float: left;
        }
        .doxss img {
            transition: all 1s;
        }
        .doxss img:hover {
            transform: scale(1.5);
        }
    </style>
</head>
<body>
    <div class="doxss">
        <img src="/Picture/动图合集/2.gif" alt="">
</div>
</body>
</html>

[前端]实际开发案例

5.奔跑的熊

<!DOCTYPE html>
<html lang="Cn_zh">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=divdiv, initial-scale=1.0">
    <title>Document</title>
    <style>
        .ss {
            width: 100%;
            height: 450px;
            background-image: url(/Picture/静态合集/山峰.jpg);
        }
        
        .ss .ss1 {
            position: absolute;
            width: 185px;
            height: 100px;
            top: 64%;
            background: url(/Picture/静态合集/熊.png) no-repeat;
            animation: xiong 1s steps(8) infinite, zhongxin 3s forwards; 
        }
        @keyframes xiong {
            0% {
                background-position: 0 0;
            }
            100% {
                background-position: -1500px 0;
            }
        }
        @keyframes zhongxin {
            0% {
                left:0;
            }
            100% {
                left:45%;
                transform: translateX(-50%);
            }
        }
    </style>
</head>
<body>
    <div class="ss">
        <div class="ss1"></div>
    </div>
</body>
</html>

[前端]实际开发案例

6.旋转木马

<!DOCTYPE html>
<html lang="Cn_zh">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        body {
            perspective: 1000px;
            background-color: pink;
        }
        section {
            position: relative;
            transform-style: preserve-3d;
            width: 300px;
            height: 200px;
            margin: 300px auto;
            animation: xzmm 10s linear infinite;
        }

        section:hover {
            animation-play-state: paused;
        }

        @keyframes xzmm {
            0% {
                transform: rotateY(0);
            }
            100% {
                transform: rotateY(360deg);
            }
        }
        section div {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url(/Picture/动图合集/雨滴.gif) no-repeat;
        }
        section div:nth-child(1) {
            transform: translateZ(300px);
        }
        section div:nth-child(2) {
            transform: rotateY(60deg) translateZ(300px);
        }
        section div:nth-child(3) {
            transform: rotateY(120deg) translateZ(300px);
        }
        section div:nth-child(4) {
            transform: rotateY(180deg) translateZ(300px);
        }
        section div:nth-child(5) {
            transform: rotateY(240deg) translateZ(300px);
        }
        section div:nth-child(6) {
            transform: rotateY(300deg) translateZ(300px);
        }
    </style>
</head>
<body>
    <section>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
    </section>
</body>
</html>

[前端]实际开发案例

7.百度换肤

点击图片,更换背景

<!DOCTYPE html>
<html lang="Cn_zh">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <!-- <script src="my.js"></script> -->
    <title>Document</title>
    
</head>
<body>
    <style>
        img {
            position: relative;
            width: 100px;
            height: 100px;
            margin: auto;
            left: 20%;
            margin-top: 50px;
        }
    </style>
    <img src="/Picture/静态合集/大背景.gif" alt="">
    <img src="/Picture/静态合集/黑背景.gif" alt="">
    <img src="/Picture/动图合集/雨滴.gif" alt="">
    <img src="/Picture/动图合集/1.gif" alt="">
    <script>
        // 1. 获取元素
        var imgs = document.getElementsByTagName('img');
        var body = document.body;
        // 2. 循环注册事件
        for(var i = 0; i < imgs.length; i++) {
            imgs[i].onclick = function() {
                // 1) 先把所有的背景去掉  干掉所有人
                for(var i = 0; i < imgs.length; i++) {
                    body.style.backgroundImage = '';
                }
                // 2) 然后让当前点击元素的url为body的url  留下我自己
                body.style.background = 'url('+this.src+')';
            }
        }
    </script>
</body>
</html>

[前端]实际开发案例

8.标签栏切换

跟着tab栏切换,内容也跟着变

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>tab栏切换</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }
        .tab {
            padding: 10px 20px;
        }
        .tab .tab_list {
            background-color: #eef1ee;
            height: 39px;
            border: 1.5px solid #d8dad8;
        }
        .tab_list li {
            float: left;
            line-height: 38px;
            padding: 0 20px;
            list-style: none;
            text-align: center;
            cursor: pointer;
        }
        .tab_list .current {
            position: relative;
            top: -1px;
            background-color: #c81623;
            color: #fff;
            border: 1.5px solid #b95c53;
        }
        .tab_con .item {
            display: none;
        }
    </style>
</head>
<body>
    <div class="tab">
        <div class="tab_list">
            <ul>
                <li class="current">商品介绍</li>
                <li>规格与包装</li>
                <li>销后保障</li>
                <li>商品评价</li>
                <li>手机社区</li>
            </ul>
        </div>
        <div class="tab_con">
            <div class="item" style="display: block;">
                商品介绍模块内容
            </div>
            <div class="item" >
                规格与包装模块内容
            </div>
            <div class="item">
                销后保障模块内容
            </div>
            <div class="item">
                商品评价模块内容
            </div>
            <div class="item">
                手机社区模块内容
            </div>
        </div>
    </div>
    <script>
        var lis = document.getElementsByTagName('li');
        var item = document.getElementsByClassName('item');
        console.log(lis);
        for(var i = 0; i < lis.length; i++) {
            lis[i].setAttribute('index', i);
            lis[i].onclick = function() {
                for(var i = 0; i < lis.length; i++ ) {
                    lis[i].className = '';
                    item[i].style = 'display: none;';
                }
                this.className = 'current';
                var index = this.getAttribute('index');
                item[index].style = 'display: block;';
            }
        }
    </script>
</body>
</html>

[前端]实际开发案例

9.下拉菜单

鼠标经过,显示下拉菜单

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>下拉菜单</title>
    <style>
        li { list-style: none; }
        a {text-decoration: none;}

        .nav>li {
            float: left;
            margin: 0 10px;
        }
        .nav li a {
            /* background-color: pink; */
            padding-left: 10px;
        }
        .nav>li>a:hover {
            background-color: #eee;
        }
        .nav ul {
            display: none;
            position: absolute;
            padding: 0px;
            margin: 0;
            /* width: 100%; */
            border-left: 1px solid #FECC5B;
            border-right: 1px solid #FECC5B;
        }
        .nav ul li {
            border-bottom: 1px solid #FECC5B;
        }
        .nav ul li a {
            padding: 0 10px;
        }
        .nav ul li a:hover {
            background-color: #FFF5DA;
        }
    </style>
</head>
<body>
    <ul class="nav">
        <li>
            <!-- ∧∨ -->
            <a href="#">微博<span id="l"></span></a>
            <ul>
                <li><a href="">私信</a></li>
                <li><a href="">评论</a></li>
                <li><a href="">@我</a></li>
            </ul>
        </li>
        <li>
            <a href="#">微信<span id="l"></span></a>
            <ul>
                <li><a href="">私信</a></li>
                <li><a href="">评论</a></li>
                <li><a href="">@我</a></li>
            </ul>
        </li>
        <li>
            <a href="#"> QQ <span id="l"></span></a>
            <ul>
                <li><a href="">私信</a></li>
                <li><a href="">评论</a></li>
                <li><a href="">@我</a></li>
            </ul>
        </li>
    </ul>
    <script>
        // 1. 获取元素
        var nav = document.querySelector('.nav');
        var span = document.querySelectorAll('#l');
        var lis = nav.children;
        console.log(span);
        // 2. 循环注册事件
        for(var i = 0; i < lis.length; i++) {
            lis[i].onmouseover = function() {
                this.children[1].style.display = 'block';
            }
            lis[i].onmouseout = function() {
                this.children[1].style.display = 'none';
            }
        }
    </script>
</body>
</html>

[前端]实际开发案例

10.发布留言

进行留言,删除等操作

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>发言留言板</title>
    <style>
        * {
            padding: 0;
            margin: 0;
        }
        textarea { resize: none;}
        .box {
            background-color: rgb(255, 234, 234);
            width: 300px;
            padding: 20px 10px;
        }
        li { 
            margin-top: 10px;
            list-style: none; 
            background-color: pink;
        }
        li a {
            text-decoration: none;
            float: right;
        }
    </style>
</head>
<body>
    <div class="box">
        <textarea rows="4" id="wenbenyu">
        </textarea>
        <input type="button" value="发布" name="" id="anniu">
        <ul ></ul>
    </div>
    <script>
        var textarea = document.getElementById('wenbenyu');
        var input = document.getElementById('anniu');
        var ul = document.querySelector('ul'); // 获取父节点

        input.onclick = function() {
            if(textarea.value == '') {
                alert('你没有输入内容');
                return false;
            } else {
                 // 1. 创建节点元素节点
                var li = document.createElement('li');
                li.innerHTML = textarea.value + '<a href="#">删除</a>';
                // 添加元素
                ul.insertBefore(li, ul.children[0]);
                // 删除元素
                var as = document.querySelectorAll('a');
                for(var i = 0; i < as.length; i++) {
                    as[i].onclick = function() {
                        ul.removeChild(this.parentNode);
                    }
                }

            }
        }
    </script>
</body>
</html>

[前端]实际开发案例

11.动态生成表格

动态生成表格,可以对其进行删除

<!DOCTYPE html>
<html lang="Cn_zh">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>动态表格</title>
    <style>
        table {
            width: 500px;
            margin: 100px auto;
            border-collapse: collapse;
            text-align: center;
        }
        td, th {
            border: 1px solid #333;
        }
        thead tr {
            height: 40px;
            background-color: #ccc;
        }
    </style>
</head>
<body>
    <table cellspacing="0">
        <thead>
            <tr style="background-color: #cacdca;">
                <th>姓名</th>
                <th>科目</th>
                <th>成绩</th>
                <th>操作</th>
            </tr>
        </thead>
        <tbody></tbody>
    </table>
    <script>
        // 1. 准备数据
        var dates = [
            {
                name: '买买提',
                subject: 'Javascript',
                score: 100
            }, {
                name: '古丽',
                subject: 'Javascript',
                score: 100
            }, {
                name: '艾莉',
                subject: 'Javascript',
                score: 100
            }, {
                name: '卖力',
                subject: 'Javascript',
                score: 100
            }, 
        ];
        // 2. tbody创建行
        var tbody = document.querySelector('tbody');
        for(var i = 0; i < dates.length; i++) {
            // 1) 创建 tr
            var tr = document.createElement('tr');
            tbody.appendChild(tr);
            // 2) 行里面创建单元格
            for (var k in dates[i]) {
                // 创建单元格
                var td = document.createElement('td');
                // 把对象里面的属性值 dates[i][k] 给td
                td.innerHTML = dates[i][k];
                tr.appendChild(td);
            }
            // 3) 操作单元格创建
            var td = document.createElement('td');
            td.innerHTML = '<a href="javascript:;">删除</a>';
            tr.appendChild(td);
        }
        // 3. 删除操作设置
        var a = document.querySelectorAll('a');
        for(var i = 0; i < a.length; i++) {
            a[i].onclick = function() {
                tbody.removeChild(this.parentNode.parentNode);
            }
        }
    </script>
</body>
</html>

[前端]实际开发案例

12.图片跟随鼠标移动

图片随着鼠标一起移动

<!DOCTYPE html>
<html lang="Cn_zh">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>图片跟随鼠标移动</title>
    <style>
        img {
            position: absolute;
        }
    </style>
</head>
<body>
    <img src="/Picture/桌面GIF图标/播放图标.png" alt="">
    <script>
        var img = document.querySelector('img');
        document.addEventListener('mousemove', function(e) {
            console.log(e.clientX);
            console.log(e.clientY);
            img.style.left = e.pageX - 15 + 'px';
            img.style.top = e.pageY - 15 + 'px ';
        });
    </script>
</body>
</html>

[前端]实际开发案例

13.按键输入内容

按 s 键,输入框获取焦点

<!DOCTYPE html>
<html lang="Cn_zh">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>按键输入内容</title>
    <style>
    </style>
</head>
<body>
    <input type="text" name="" placeholder="请输入" id="">
    <script>
        var input = document.querySelector('input');
        document.onkeyup = function(e) {
            console.log(e.keyCode);
            if(e.keyCode == 83){
                input.focus();
                input.onkeypress = function(e) {
                    input.value = e.key;
                }    
            }
        }
    </script>
</body>
</html>

[前端]实际开发案例

14.定时器实现

实现计时功能

<!DOCTYPE html>
<html lang="Cn_zh">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>定时器</title>
    <style>
        span{
            float: left;
            width: 20px;
            height: 20px;
            background-color: #000;
            color: #fff;
            padding-left: 10px;
            padding-right: 10px;
            margin: 2px;
        }
    </style>
</head>
<body>
    <span class="hour">1</span>
    <span class="minute">1</span>
    <span class="second">1</span>
    <script>
        // 获取元素
        var hour = document.querySelector('.hour'); // 小时
        var minute = document.querySelector('.minute'); // 分钟
        var second = document.querySelector('.second'); // 秒
        var inputTime = +new Date('2022-12-26 14:41:00'); // 返回的是用户输入时间总的毫秒数
        conutDown(); // 先调用一次
        // 开启定时器
        var timer = setInterval(conutDown, 1000);
        
        function conutDown() {
            var nowTIme = +new Date(); // 返回的时当前时间总的毫秒数
            var times = (inputTime - nowTIme) / 1000; // time 是剩余时间总的毫秒数
            if(times <= 0) {
                window.clearInterval(timer);
            }
            var h = parseInt(times / 60 / 60 % 24); // 时
            h = h < 10 ? '0' + h : h;
            hour.innerHTML = h;
            var m = parseInt(times / 60 % 60); // 分
            m = m < 10 ? '0' + m : m;
            minute.innerHTML = m;
            var s = parseInt(times % 60); // 当前的秒
            s = s < 10 ? '0' + s : s;
            second.innerHTML = s;
        }
    </script>
</body>
</html>

[前端]实际开发案例

15.发送短信

点击按钮,发送短信,五秒后获取

<!DOCTYPE html>
<html lang="Cn_zh">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>发送短信</title>
    <style>
    </style>
</head>
<body>
    <input type="text" name="" placeholder="请输入验证码">
    <button>发送</button>
    <script>
        // 获取元素
        var input = document.querySelector('input');
        var btn = document.querySelector('button');
        btn.addEventListener('click', function() {
            this.disabled = true;
            conutDown();
            var timer = setInterval(conutDown, 1000);

        })
         // 开启定时器
         var inputTime = +new Date('2022-12-7 13:49:00'); // 返回的是用户输入时间总的毫秒数
        function conutDown() {
            var nowTIme = +new Date(); // 返回的时当前时间总的毫秒数
            var times = (inputTime - nowTIme) / 1000; // time 是剩余时间总的毫秒数
            if(times <= 0) {
                input.value = '235432';
                btn.innerHTML = '发送';
                btn.disabled = false;
                window.clearInterval(timer);
            } else {
                 var s = parseInt(times % 60); // 当前的秒
                s = s < 10 ? '0' + s : s;
                btn.innerHTML = '还剩' + s + '秒再次点击';
            }
        }
    </script>
</body>
</html>

[前端]实际开发案例

16.5秒后跳转页面

五秒后自动跳转页面

<!DOCTYPE html>
<html lang="Cn_zh">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>倒计时跳转页面</title>
    <style>
    </style>
</head>
<body>
    <div></div>
    <script>
        var div = document.querySelector('div');
        var timer = 5;
        setInterval(function() {
            if(timer == 0) {
                location.href = 'http://www.baidu.com';
            } else {
                div.innerHTML = '你将在' + timer + '秒钟之后跳转到百度';
                timer--;
            }
        }, 1000);
    </script>
</body>
</html>

[前端]实际开发案例

17.获取URL参数数据

// login.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>登陆页面</title>
</head>
<body>
    <form action="index.html">
        <div>登陆页面</div>
        用户名:<input type="text" name="uname"  id="">
        <input type="submit" name="" value="登录">
    </form>
</html>

// index.html

<!DOCTYPE html>
<html lang="Cn_zh">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>首页</title>
    <style>
    </style>
</head>
<body>
    <div>首页</div>
    <div class="s" style="margin: 100px;">欢迎光临</div>
    <script>
        var div = document.querySelector('.s');
        var ss = location.search; // ?uname=12
        // 1. 先去掉? substr('起始位置',截取几个字符)
        var params = ss.substr(1); //uname=12
        // 2. 利用 = 把字符串分割为数组 split('=');
        var arr = params.split('='); // ['uname', '12']
        // 3. 把数据写入div中
        div.innerHTML = arr[1] + ' 欢迎光临';
    </script>
</body>
</html>

[前端]实际开发案例

18.(拖动模态框(登陆界面)

<!DOCTYPE html>
<html lang="Cn_zh">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>拖动模态框</title>
    <style>
        .login-header {
            margin-left: 40%;
        }
        .login {
            display: none;
            width: 512px;
            height: 280px;
            position: fixed;
            border: #ebebeb solid 1px;
            left: 50%;
            top: 50%;
            background: #fff;
            box-shadow: 0px 0px 20px #ddd;
            z-index: 9999;
            transform: translate(-50%, -50%);
        }
        .login-title {
            width: 100%;
            text-align: center;
            line-height: 40px;
            height: 40px;
            font-size: 18px;
            position: relative;
            cursor: move;
            background: #ebebeb;
            border-bottom: #ebebeb 1px solid;
        }
        .login-input-content {
            margin-top: 20px;
        }
        .login-button {
            width: 50%;
            margin: 30px auto 0px auto;
            line-height: 40px;
            font-size: 14px;
            border: #ebebeb 1px solid;
            text-align: center;
        }
        .login-bg {
            display: none;
            width: 100%;
            height: 100%;
            position: fixed;
            top: 0;
            right: 0;
            background: rgba(0, 0, 0, .3);
        }
        a {
            text-decoration: none;
            color: #000;
        }
        .login-button a {
            display: block;
        }
        .login-input input.list-input {
            float: left;
            line-height: 35px;
            height: 35px;
            width: 350px;
            border: #ebebeb 1px solid;
            text-indent: 5px;
        }
        .login-input {
            overflow: hidden;
            margin: 0px 0px 20px 0px;
        }
        .login-input label {
            float: left;
            width: 90px;
            padding-right: 10px;
            text-align: right;
            line-height: 35px;
            height: 35px;
            font-size: 14px;
        }
        .login-title span {
            position: absolute;
            font-size: 12px;
            right: -20px;
            top: -23px;
            background: #ebebeb;
            border: #d8d8d8 solid 1px;
            width: 40px;
            height: 40px;
            border-radius: 20px;
        }
    </style>
</head>
<body>
    <div class="login-header"><a id="link" href="javascrip:;">点击,弹出登录框</a></div>
    <div id="login" class="login">
        <div id="title" class="login-title">登陆会员
            <span><a href="javascript:void(0);" class="close-login" id="closeBtn">关闭</a></span>
        </div>
        <div class="login-input-content">
            <div class="login-input">
                <label for="">用    户    名:</label>
                <input type="text" placeholder="请输入用户名" name="info[username]" id="username" class="list-input">
            </div>
            <div class="login-input">
                <label for="">登陆密码:</label>
                <input type="password" placeholder="请输入登陆密码" name="info[password]" id="password" class="list-input">
            </div>
        </div>
        <div id="loginBtn" class="login-button"><a href="javascript:vodi(0);" id="login-button-submit">登陆会员</a></div>
    </div>
    <!-- 遮罩层 -->
    <div id="bg" class="login-bg"></div>
    <script>
        var login = document.querySelector('.login');
        var bg = document.querySelector('.login-bg');
        var header = document.querySelector('.login-header');
        var close = document.querySelector('.close-login');
        var title = document.querySelector('#title');
        // 显示登录窗口
        header.addEventListener('click', function() {
            login.style.display = 'block';
            bg.style.display = 'block';
        });
        // 隐藏登录窗口
        close.addEventListener('click', function() {
            login.style.display = 'none';
            bg.style.display = 'none';
        });
        // 窗口拖拽
        title.addEventListener('mousedown', function(e) {
            var x = e.pageX - login.offsetLeft;
            var y = e.pageY - login.offsetTop;
            document.addEventListener('mousemove', move); 
            function move(e) {
                login.style.left = e.pageX - x + 'px';
                login.style.top = e.pageY - y + 'px';
            }
            document.addEventListener('mouseup', function(e) {
                document.removeEventListener('mousemove', move);
            });
        });
        
    </script>
</body>
</html>

[前端]实际开发案例

19.放大镜效果

<!DOCTYPE html>
<html lang="Cn_zh">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>放大镜效果</title>
    <style>
        .imgs {
            position: relative;
            width: 200px;
            height: 310px;
            border: #dbdbdb 1px ridge;
        }
        .imgl {
            width: 100%;
            height: 100%;
        }
        .imgs .ss {
            width: 70%;
            padding-left: 30px;
        }
        .imgs .zhezhao {
            display: none;
            position: absolute;
            top: 0;
            left: 0;
            width: 100px;
            height: 100px;
            background: rgb(255, 255, 3, .5);
            cursor: move;
        }
        .imgs .big {
            display: none;
            position: absolute;
            left: 210px;
            top: 0px;
            width: 310px;
            height: 310px;
            border: 1px solid #ccc;
            overflow: hidden;
        }
        .imgs .ds {
            position: absolute;
            top: 0;
            left: 0;
            padding: 0 80px;
            width: 130%;
        }
    </style>
</head>
<body>
        <div class="imgs">
            <div class="imgl">
                <img src="/Picture/静态合集/手机.png" class="ss" alt="">
                <div class="zhezhao"></div>
            </div>
            <div class="big">
                <img class="ds" src="/Picture/静态合集/手机.png" alt="">
            </div>
        </div>
    <script>
        var img = document.querySelector('.imgl');
        var zhezhao = document.querySelector('.zhezhao');
        var big = document.querySelector('.big');
        var ds = document.querySelector('.ds');
        // 鼠标进入图片框内时,显示遮罩层和放大层
        img.addEventListener('mouseover', function() {
            zhezhao.style.display = 'block';
            big.style.display = 'block';
        });
        // 鼠标离开图片框区域时,隐藏遮罩层和放大层
        img.addEventListener('mouseout', function() {
            zhezhao.style.display = 'none';
            big.style.display = 'none';
        });
        // 遮罩层和放大层跟着鼠标移动
        img.addEventListener('mousemove', function(e) {
            // 鼠标移动距离
            var x = e.pageX - this.offsetLeft -57;
            var y = e.pageY - this.offsetTop - 57;
            if(x <= 0) {
                x = 0;
            } else if(x >= 100) {
                x = 100;
            }
            if(y <= 0) {
                y = 0;
            } else if(y >= 210) {
                y = 210;
            }
            zhezhao.style.left = x + 'px';
            zhezhao.style.top = y + 'px';
            // 放大区最大移动距离
            var bigMax = ds.offsetWidth - big.offsetWidth;
            // 移动距离 x y 
            var xx = x * bigMax / 100;
            var yy = y * bigMax / 90;

            ds.style.left = -xx + 'px';
            ds.style.top = -yy + 'px';
        });
        
    </script>
</body>
</html>

[前端]实际开发案例

20.仿淘宝固定侧边栏

<!DOCTYPE html>
<html lang="Cn_zh">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>首页</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }
        .w {
            width:600px;
            margin: auto;
            margin-bottom: 10px;
        }
        .header {
            height: 100px;
            background-color: #881382;
        }
        .banner {
            height: 200px;
            background-color: #7ec9ec;
        }
        .main {
            height: 700px;
            background-color: #96bf2a;
        }

        .bar {
            position: absolute;
            left: 50%;
            top: 45.5%;
            margin-left: 300px;
            width: 50px;
            height: 150px;
            background-color: pink;

        }
        .goBack {
            margin-left: 10px;
            font-size: 20px;
            display: none;
        }
    </style>
</head>
<body>
    <div class="bar">
        <span class="goBack"><a href="#tou">︿  </a><br> 顶部</span>
    </div>
    <div class="header w" id="tou">头部区域</div>
    <div class="banner w">banner 区域</div>
    <div class="main w">主体部分</div>

    <script>
        var bar = document.querySelector(".bar");
        var goBack = document.querySelector(".goBack");
        document.onscroll = function(){
            if(window.pageYOffset >= 108) {
                bar.style.position = "fixed";
                bar.style.top = "220px";
            } else {
                bar.style.position = "absolute";
                bar.style.top = "45.5%";
            }
            if(window.pageYOffset >= 320){
                goBack.style.display = "block";
            } else {
                goBack.style.display = "none";

            }
        }
        
    </script>
</body>
</html>

[前端]实际开发案例

21.轮播图

<!DOCTYPE html>
<html lang="Cn_zh">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="/Case/实例——JS/index.css">
    <title>轮播图</title>
    <style>
        .focus {position: relative;
            margin-left: 110px;
            margin-top: 50px;
            width: 500px;
            height: 300px;
            border-top: 10px solid rgb(22, 20, 20); 
            border-bottom: 10px solid rgb(22, 20, 20); 
            border-right: 10px solid rgb(1, 185, 41); 
            border-left: 10px solid rgb(1, 185, 41); 
            background-color: pink;
            overflow:hidden;
        }

        .arrow-l {
            position: absolute;
            font-size: 30px;
            width: 25px;
            top: 130px;
            padding-bottom: 4px;
            color: rgba(255, 255, 255, 0.629);
            background-color: rgba(0, 0, 0, 0.34);
            border-top-right-radius:100px;
            border-bottom-right-radius:100px;
            display: none;
            z-index: 3;
            text-align: center;
        }
        .arrow-r {
            position: absolute;
            font-size: 30px;
            width: 25px;
            top: 130px;
            text-align: center;
            padding-bottom: 4px;
            color: rgba(255, 255, 255, 0.629);
            background-color: rgba(0, 0, 0, 0.34);
            margin-left: 475px;
            border-top-left-radius:100px;
            border-bottom-left-radius: 100px;
            display: none;
            z-index: 3;
        }

        .focus ul {
            position: absolute;
            top: 0px;
            left: 0px;
            width: 600%;
            z-index: 1;
        }

        ul li {
            float: left;
            display:inline;
            width: 500px;
            height: 300px;
        }
        ul img {
            width: 500px;
            height: 300px;
        }
        .focus ol {
            position: relative;
            top: 95%;
            width: 200px;
            left: 12%;
            z-index: 3;
        }
        ol li {
            float: left;
            margin-left: 5px;
            border-radius: 10px;
            border: 1.5px solid #fff;
            width: 8px;
            height: 8px;
        }
        .current {
            background-color: #fff;
        }
    </style>
</head>
<body>
    <div class="focus">
        <!-- 左按钮 -->
        <a href="javascript:;" class="arrow-l"> &lt </a>
        <!-- 右按钮 -->
        <a href="javascript:;" class="arrow-r"> &gt </a>
        <!-- 核心滚动区域 -->
        <ul>
            <li>
                <a href="#"><img src="/Picture/静态合集/浪涌海水.png" alt=""></a>
            </li> 
            <li>
                <a href="#"><img src="/Picture/静态合集/海水浪涛.png" alt=""></a>
            </li> 
            <li>
                <a href="#"><img src="/Picture/静态合集/白林.jpg" alt=""></a>
            </li>
        </ul>
        <ol class="circle"></ol>
    </div>

    <script>
        // 简单动画函数封装
        function animate(obj, target, callback) {
            // 清除以前的定时器,只保留当前定时器
            clearInterval(obj.timer);
            obj.timer = setInterval(function() {
                // console.log(obj.offsetLeft);
                // 步长值
                var step = (target - obj.offsetLeft) / 10;
                // 判断正负,并解决小数点的问题
                step = step > 0 ? Math.ceil(step) : Math.floor(step);
                // console.log(step);
                // 达到目标距离,结束定时器,执行回调函数
                if(obj.offsetLeft == target) {
                    clearInterval(obj.timer);
                    // if(callback) {
                    //     callback();
                    // }
                    callback && callback();
                }
                // 吧每次加一 这个步长值改为一个缓慢变小的值, 步长公式:(目标值 - 现在的位置) / 10
                obj.style.left = obj.offsetLeft + step + 'px';
                
            }, 15);
        }

        var arrow_l = document.querySelector('.arrow-l');
        var arrow_r = document.querySelector('.arrow-r');

        // 1. 鼠标经过显示左右按钮,离开隐藏左右按钮
        var focus = document.querySelector('.focus');
        focus.addEventListener('mouseover', function() {
            arrow_l.style.display = 'block';
            arrow_r.style.display = 'block';
            clearInterval(timer); // 停止自动播放
            timer = null; // 清除定时器变量
        })
        focus.addEventListener('mouseout', function() {
            arrow_l.style.display = 'none';
            arrow_r.style.display = 'none';
            // 鼠标离开开启定时器,自动播放
            timer = setInterval(function() {
                // 手动调用点击事件
                arrow_r.click();
            }, 2500);
        })
        
        // 获取focus宽度
        var focusWidth = focus.clientWidth;

        // 2. 动态生成小圆圈,有几张图片,就生成几个小圆圈
        var ul = focus.querySelector('ul');
        var ol = focus.querySelector('.circle');
        for(var i=0; i < ul.children.length; i++) {
            // 创建一个小li
            var li = document.createElement('li');
            // 记录当前小圆圈的索引号, 通过自定义属性来做
            li.setAttribute('index', i);
            // 吧li插入ol里面
            ol.appendChild(li);
            // 小圆圈排他思想
            li.addEventListener('click', function() {
                // 干掉所有人,吧所有小li 清除 current 类名
                for(var i=0; i <ol.children.length; i++) {
                    ol.children[i].className='';
                }
                // 留下我自己 当前小li 设置类名
                this.className = 'current';

                // 3. 点击小圆圈,移动图片
                // 获取小li 索引号
                var index = this.getAttribute('index');
                // 当我们点击了某个小圆点,就拿到索引号 给num 和 circle
                num = index;
                circle = index;
                // 移动距离
                animate(ul, -index * focusWidth);
            })
        }
        // 第一个小li 设置类名
        ol.children[0].className = 'current';

        // 4. 克隆第一张图片,放最后
        var first = ul.children[0].cloneNode(true);
        ul.appendChild(first);

        // 5. 点击右侧按钮,图片滚动一张
        var num = 0; // 控制图片滚动
        var circle = 0; // 控制小圆圈的播放
        // flag 节流阀
        var flag = true;
        // 右侧按钮功能
        arrow_r.addEventListener('click', function() {
            if(flag) {
                flag = false; // 关闭节流阀
                // 如果走到了最后一张图片,此时,我们的ul 要快速复原 left 为 0
                if(num == ul.children.length-1) {
                    ul.style.left = 0;
                    num = 0;
                }
                num++;
                animate(ul, -num * focusWidth, function() {
                    flag = true; // 打开节流阀
                });
                // 6. 点击右侧按钮,小圆圈跟着变化 
                circle++;
                // 如果 circle =3 说明到了最后,就复原
                if(circle == ol.children.length) {
                    circle =0;
                }
                // 调用函数
                circleChange();
            }
            
        })

        // 7. 左侧按钮功能
        arrow_l.addEventListener('click', function() {
            if(flag) {
                flag = false; // 关闭节流阀
                // 如果走到了最后一张图片,此时,我们的ul 要快速复原 left 为 0
                if(num == 0) {
                    num = ul.children.length-1;
                    ul.style.left = -num * focusWidth +'px';
                }
                num--;
                animate(ul, -num * focusWidth, function() {
                    flag = true; // 打开节流阀
                });
                // 7. 点击左侧按钮,小圆圈跟着变化 
                circle--;
                // 如果 circle <0  说明第一张图片,则小圆圈要改为最后一个小圆圈
                if(circle < 0) {
                    circle = ol.children.length-1;
                }
                // 调用函数
                circleChange();
            }
            
        })

        function circleChange() {
            // 先清除其余的小圆圈的类名
            for(var i = 0; i < ol.children.length; i++) {
                ol.children[i].className='';
            }
            // 留下当前的小圆圈的类名
            ol.children[circle].className = 'current';
        }

        // 8. 自动播放轮播图
        var timer = setInterval(function() {
            // 手动调用点击事件
            arrow_r.click();
        }, 2500);
    </script>
</body>
</html>

[前端]实际开发案例

22.导航栏背景图移动

<!DOCTYPE html>
<html lang="Cn_zh">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="index.css">
    <title>导航栏背景图移动</title>
    <style>
        body {
            background: #000;
        }
        div {
            position: relative;
            margin: 20px auto;
            width: 67%;
            height: 30px;
            background: #fff;
            border-radius: 5px;
            overflow:hidden;
        }
        div ul {
            position: absolute;
            top: 3px;
            left: 0px;
            width: 600%;
            z-index: 1;
        }
        ul li {
            float: left;
            margin: 5px 10px;
            font-weight: bold;
        }
        .cloud {
            width: 70px;
            height: 30px;
            /* background: pink; */
            display: inline-block;
            background: url(/Picture/桌面GIF图标/表格头部.jpg);
        }
        .currents a {
            color: rgb(43, 176, 176);
        }
        .cloud {
            position: relative;
            left: 0px;
            top: 0px;
        }
    </style>
</head>
<body>
    <div id="c-nav" class="c-nav">
        <span class="cloud"></span>
        <ul>
            <li class="currents"><a href="#">首页新闻</a></li>
            <li><a href="#">师资力量</a></li>
            <li><a href="#">活动策划</a></li>
            <li><a href="#">企业文化</a></li>
            <li><a href="#">招聘信息</a></li>
            <li><a href="#">公司简介</a></li>
            <li><a href="#">上海校区</a></li>
            <li><a href="#">广州校区</a></li>
        </ul>
    </div>
    <script>
        // 简单动画函数封装
        function animate(obj, target, callback) {
            // 清除以前的定时器,只保留当前定时器
            clearInterval(obj.timer);
            obj.timer = setInterval(function() {
                // console.log(obj.offsetLeft);
                // 步长值
                var step = (target - obj.offsetLeft) / 10;
                // 判断正负,并解决小数点的问题
                step = step > 0 ? Math.ceil(step) : Math.floor(step);
                // console.log(step);
                // 达到目标距离,结束定时器,执行回调函数
                if(obj.offsetLeft == target) {
                    clearInterval(obj.timer);
                    if(callback) {
                        callback();
                    }
                }
                // 吧每次加一 这个步长值改为一个缓慢变小的值, 步长公式:(目标值 - 现在的位置) / 10
                obj.style.left = obj.offsetLeft + step + 'px';
                
            }, 15);
        }
    </script>
    <script>

        // 1. 获取元素
        var cloud = document.querySelector('.cloud');
        var c_nav = document.querySelector('.c_nav');
        var li = document.querySelector('ul').children;
        // 2. 给所有的小li绑定事件
        // 筋斗云起始位置
        var current = 0;
        for(var i=0; i<li.length; i++) {
            // 1) 鼠标经过,吧当前li的位置作为目标值
            li[i].addEventListener('mouseenter', function() {
                animate(cloud, this.offsetLeft-10);
            })
            // 2) 鼠标离开就回到起始位置
            li[i].addEventListener('mouseleave', function() {
                animate(cloud, current-10);
            })
            // 3)当我们鼠标点击,就把当前位置作为目标值
            li[i].addEventListener('click', function() {
                current = this.offsetLeft;
                for(var j=0; j<li.length; j++) {
                    li[j].className = '';
                }
                this.className = 'currents';
            })
        }
</body>
</html>

[前端]实际开发案例

23.记住用户名

<!DOCTYPE html>
<html lang="Cn_zh">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>index</title>
</head>
<body>
    <input type="text" name="" id="" class="uname">
    <input type="checkbox" class="cbox">记住用户名
    <script>
        var uname = document.querySelector('.uname');
        var cbox = document.querySelector('.cbox');
        // 判断用户名是否存在
        if(localStorage.getItem('uname')) {
            // 给文本框赋值
            uname.value = localStorage.getItem('uname');
            // 勾选多选框
            cbox.checked = true;
        }
        // 多选框发生改变
        cbox.addEventListener('change', function() {
            // 若勾选上
            if(this.checked) {
                // 本地存储用户名
                localStorage.setItem('uname', uname.value);
            } else {
                //本地存储中删除对应的用户名
                localStorage.removeItem('uname');
            }
        })
        
    </script>
</body>
</html>

[前端]实际开发案例





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