如何利用js实现音乐导航效果

2020-11-03 来源：东饰资讯网

本文知识点介绍：

1、audio.play() 播放音频

2、audio.currentTime = 0 从头开始播放

3、引入工具库

运行效果如下：

鼠标进入后，播放音频

代码如下：

<!DOCTYPE html>
<html>
<head>
 <meta charset="UTF-8">
 <title></title>
 <style>
 *{margin:0;padding: 0;list-style: none;border:0;}
 a{text-decoration: none;color: #000;}
 #nav{width: 900px;height: 40px;border: 1px solid #ccc;margin: 100px auto;overflow: hidden;}
 #nav ul{width: 910px;}
 #nav ul li{float: left;width: 100px;line-height: 40px;text-align: center;
 background: url("images/_r1_c1.png") no-repeat 0 0 ;border-right: 1px dashed #ccc;position: relative;}
 #nav ul li a{width: 100%;height: 100%;display: inline-block;}
 span{width: 100px;height: 40px;background-color: skyblue;position: absolute;left: 0;top: 40px;z-index: -1;}
 </style>
</head>
<body>
 <nav id="nav">
 <ul id="ul">
 <li><a href="">首页</a><span></span><audio src=" rel="external nofollow" source/a1.mp3"></audio></li>
 <li><a href="">新头条</a><span></span><audio src=" rel="external nofollow" source/a2.mp3"></audio></li>
 <li><a href="">电视剧</a><span></span><audio src=" rel="external nofollow" source/a3.mp3"></audio></li>
 <li><a href="">新电影</a><span></span><audio src=" rel="external nofollow" source/a4.mp3"></audio></li>
 <li><a href="">小游戏</a><span></span><audio src=" rel="external nofollow" source/a5.mp3"></audio></li>
 <li><a href="">小说汇</a><span></span><audio src=" rel="external nofollow" source/a6.mp3"></audio></li>
 <li><a href="">旅游假</a><span></span><audio src=" rel="external nofollow" source/a7.mp3"></audio></li>
 <li><a href="">正品购</a><span></span><audio src=" rel="external nofollow" source/a8.mp3"></audio></li>
 <li><a href="">今日团</a><span></span><audio src=" rel="external nofollow" source/a9.mp3"></audio></li>
 </ul>
 </nav>
<script src="../00MyTools/MyTools.js"></script>
<script>
 window.addEventListener('load', function (ev) {
 // 1. 获取需要的标签
 var ul = myTool.$('ul');
 var allLis = ul.children;

 // 2. 遍历
 for (var i = 0; i < allLis.length; i++) {
 allLis[i].style.backgroundPositionY = (i * -40) + 'px';

 // 2.1 鼠标进入
 allLis[i].addEventListener('mouseover', function () {
 // 2.2 缓动动画
 myTool.slowMoving(this.children[1], {"top": 0});
 // 2.3 播音乐
 this.children[2].play();
 this.children[2].currentTime = 0;
 });

 // 2.3 鼠标离开
 allLis[i].addEventListener('mouseout', function () {
 // 2.4 缓动动画
 myTool.slowMoving(this.children[1], {"top": 40});
 });
 }

 });
</script>
</body>
</html>

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如何利用js实现音乐导航效果