HTML+JavaScript 模仿虾米音乐播放器

这两天学习了JavaScript入门，按照老师要求，按照虾米播放器的布局，制作一个动态生成音乐列表的页面，并且支持播放。主要不在于模仿，而在于用JavaScript动态生成列表。
首先看看虾米播放器布局：

整体分为头部head，中部main和底部foot
而头部head又分为logo部分，menu导航栏，search搜索框，和登录框login
所以先编写头部的框架

<!-- 头部 -->
        <div class="head">
            <!-- logo -->
            <div class="logo"><img src="img/LOGO.png" class="logo"></div>
            <!-- 导航栏 -->
            <div class="nav">
                <ul class="menu">
                    <li><a href="">发现</a></li>
                    <li><a href="">我的音乐</a></li>
                    <li><a href="">音乐人</a></li>
                    <li><a href="">客户端下载</a></li>
                    <li><a href="">会员中心</a></li>
                </ul>
            </div>
            <!-- 搜索框 -->
            <div class="search">
                <div class="input">
                    <input type="text" placeholder="请输入音乐名" name="search" class="input">
                </div>
                <img src="img/搜索.png" class="search">
            </div>
            <!-- 登录框 -->
            <div class="login">
                <span class="login">
                    <a href="">登录</a>/<a href="">注册</a>
                </span>
            </div>
        </div>

而主体部分又分为左边部分和右半部分，左半部分包括专辑背景和专辑图片

<!-- 左边 -->
        <div class="left">
            <!-- 歌曲图片 -->
            <div class="music-img-box">
                <div class="music-img"><img src="" id="music-img"></div>
            </div>
            <!-- 歌曲信息 -->
            <div class="music-info">歌曲名</div>            
        </div>

右边主要就是list歌曲列表了

<!-- 右边列表 -->
        <div class="right">
            <!-- 内容页 -->
            <div class="main">
                
            </div>
        </div>

最后底部加上一个foot栏，并添加audio音频插件

<!-- 底部 -->
        <div class="foot">
            <audio src="" controls class="audio" id="audio"></audio>
        </div>
    </div>

编写css样式

div.root{
    position: absolute;
    width: 90%;
    left: 50%;
    margin-left: -45%;
}
div.head{
    position: relative;
    width: 100%;
    height: 80px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.2);
}
div.logo{
    position: relative;
    margin-left: 50px;
    width: 200px;
    height: 100%;
    float: left;
}
img.logo{
    position: relative;
    height: 50px;
    padding-top: 17px;
}
div.nav{
    position: relative;
    height: 100%;
    width: 600px;
    float: left;
}
ul.menu>li>a{
    display: block;
    height: 80px;
    width: 90px;
    line-height: 80px;
    text-align: center;
    color: gray;
    box-sizing: border-box;
    float: left;
}
ul.menu>li>a:hover{
    color: red;
}
div.search{
    position: relative;
    width: 250px;
    height: 100%;
    float: left;
}
div.input{
    position: relative;
    width: 60%;
    height: 40px;
    border-bottom: 2px solid rgba(0, 0, 0, 0.2);
    top: 50%;
    margin-top: -20px;
    margin-left: 20px;
    float: left;
}
input.input{
    position: relative;
    width: 100%;
    height: 100%;
    font-size: 15px;
    box-sizing: border-box;
}
img.search{
    position: relative;
    width: 40px;
    top: 50%;
    margin-top: -20px;
    float: left;
}
div.login{
    position: relative;
    width: 120px;
    height: 100%;
    float: left;
}
span.login{
    display: block;
    position: relative;
    width: 80px;
    height: 30px;
    left: 50%;
    top: 50%;
    margin-left: -40px;
    margin-top: -15px;
}
span.login>a{
    color: gray;
}
span.login>a:hover{
    color: red;
}
div.left{
    clear: both;
    position: relative;
    width: 30%;
    height: 550px;
    box-sizing: border-box;
    float: left;
}
div.right{
    position: relative;
    width: 70%;
    height: 550px;
    box-sizing: border-box;
    border-left: 1px solid gray;
    float: left;
}
div.music-img-box{
    position: relative;
    height: 200px;
    width: 200px;
    background-color: black;
    left: 50%;
    margin-left: -100px;
    margin-top: 50px;
}
div.music-img{
    position: absolute;
    width: 200px;
    height: 140px;
    margin-top: 30px;
    box-sizing: border-box;
    border-top: 3px solid gray;
    border-bottom: 3px solid gray;
    background-color: black;
}
div.music-info{
    position: relative;
    width: 200px;
    height: 50px;
    left: 50%;
    margin-left: -100px;
    text-align: center;
    font-weight: bold;
    font-size: 20px;
    line-height: 50px;
}
div.main{
    position: absolute;
    width: 100%;
    height: 100%;
    overflow-y: scroll;
}
div.main::-webkit-scrollbar{
    width: 5px;
    background: none;
}
div.main::-webkit-scrollbar-thumb{
    width: 5px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 2px;
}
div.main>div:nth-child(2n){
    background-color: rgba(0, 0, 0, 0.2);
}
div.list{
    position: relative;
    width: 100%;
    height: 50px;
    border-bottom: 1px solid gray;
}
div.list:hover{
    color: red;
    font-weight: bold;
    cursor: pointer;
}
div.foot{
    clear: both;
    position: relative;
    width: 100%;
    height: 60px;
    border-top: 1px solid gray;
}
audio.audio{
    position: relative;
    width: 100%;
}
span{
    position: relative;
    line-height: 50px;
    margin-left: 30px;
    float: left;
}
img.list{
    position: relative;
    height: 35px;
    width: 35px;
    margin-top: 10px;
    margin-left: 5px;
    float: left;
}
img#music-img{
    position: relative;
    margin: -20px auto 0 auto;
    width: 180px;
    height: 180px;
    border: 2px double gray;
    border-radius: 180px;
}
.circle{
    animation: circle 20s linear infinite;
}
@keyframes circle{
    0%{
        transform: rotate(0deg);
    }
    100%{
        transform: rotate(360deg);
    }
}

效果图：

然后编写JavaScript脚本，先定义data数据文件

{
        "img":'img/1.jpg',
		"ablum": "我们不一样",
		"artist": "大壮",
        "id": 1,
		"name": "大壮 - 我们不一样",
		"path": "music/music1.mp3",
		"size": 10935843,
		"style": "流行",
		"uid": 8,
		"uploadtime": 1551273973000
	},
	{
        "img":'img/2.jpg',
		"ablum": "小青蛙",
		"artist": "青蛙",
		"id": 2,
		"name": "青蛙 - 小跳蛙",
		"path": "music/music2.mp3",
		"size": 3893552,
		"style": "民谣,流行",
		"uid": 8,
		"uploadtime": 1551273992000
	},
	{
        "img":'img/3.jpg',
		"ablum": "未知",
		"artist": "xx",
		"id": 3,
		"name": "其实都没有",
		"path": "music/music3.mp3",
		"size": 9487673,
		"style": "流行",
		"uid": 8,
		"uploadtime": 1551274029000
	},
	{
        "img":'img/4.jpg',
		"ablum": "xx",
		"artist": "xx",
		"id": 4,
		"name": "校长 - 带你去旅行",
		"path": "musics/8/1551274050945.mp3",
		"size": 9135714,
		"style": "流行",
		"uid": 8,
		"uploadtime": 1551274050000
	},
	{
        "img":'img/5.png',
		"ablum": "晴天",
		"artist": "周杰伦",
		"id": 5,
		"name": "周杰伦-晴天",
		"path": "musics/8/1551274071712.mp3",
		"size": 4320631,
		"style": "英伦,古典,摇滚",
		"uid": 8,
		"uploadtime": 1551274071000
	},
	{
        "img":'img/6.jpg',
		"ablum": "xx",
		"artist": "毛不易",
		"id": 6,
		"name": "消愁-毛不易",
		"path": "musics/8/1551274094026.mp3",
		"size": 7176384,
		"style": "流行,古典",
		"uid": 8,
		"uploadtime": 1551274094000
    },
	{
        "img":'img/7.jpg',
		"ablum": "xx",
		"artist": "毛不易",
		"id": 7,
		"name": "消愁-毛不易",
		"path": "musics/8/1551274094026.mp3",
		"size": 7176384,
		"style": "流行,古典",
		"uid": 8,
		"uploadtime": 1551274094000
	}

当页面加载完后，执行：

window.onload=function(){
    //设置初始图片
    document.getElementById('music-img').src = data[0].img;
    //有多少歌就循环多少次
    for(var i=0;i<data.length;i++){
        // 新建一个div.list
        var list = document.createElement('div');
        list.className='list';
        list.value=data[i].path;

        //获取本条信息
        var temp = new Date(data[i].uploadtime).toLocaleTimeString();
        var info='';
        info+='\t'+data[i].id;
        info+='\t'+data[i].name;
        info+='\t'+temp;
        // span
        var span = document.createElement('span');
        span.innerText=info;

        //img
        var img = document.createElement('img');
        img.className='list';
        img.src=data[i].img;
        //加入到list
        list.appendChild(img);
        list.appendChild(span);
        // // 在内容页追加
        document.getElementsByClassName('main')[0].appendChild(list);

        //给当前list添加监听
        list.addEventListener('click',function(){
            document.getElementById('music-img').src = this.querySelector('img').src;
            
            // 设置音乐
            document.getElementById('audio').src=this.value;
            document.getElementById('audio').play();
        })

        //监听播放器是否播放
        document.getElementById('audio').addEventListener('pause',function(){
            document.getElementById('music-img').className='';
        })
        document.getElementById('audio').addEventListener('play',function(){
            document.getElementById('music-img').className ='circle';
        })
    }   
}

最后的效果就是：