【每日一练】17—发光导航栏效果的实现

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wx6332e0803afcf 2022-11-07 16:34:09

文章标签 ico 导航栏 html 文章分类 后端开发

【每日一练】17—发光导航栏效果的实现_html

写在前面

导航栏是每个网站必备的一个元素，它主要的作用就是可以起到快速浏览网页内容的效果，我们通过网站的菜单导航可以迅速找到自己想要访问的内容，而好的导航栏可以起到快速吸引用户的目的。

今天我们就一起来练习一组导航栏效果，具体效果如下：

【每日一练】17—发光导航栏效果的实现_html_02

HTML代码：

<html>
<head>
    <meta charset="UTF-8">
    <title>【每日一练】17—发光导航栏效果的实现</title>
</head>
<body>
    <ul>
        <li><a href="https://www.webqdkf.com"><ion-icon name="home-outline"></ion-icon></a></li>
        <li><a href="https://www.webqdkf.com"><ion-icon name="person-outline"></ion-icon></a></li>
        <li class="active"><a href="https://www.webqdkf.com"><ion-icon name="add-circle-outline"></ion-icon></a></li>
        <li><a href="https://www.webqdkf.com"><ion-icon name="settings-outline"></ion-icon></a></li>
        <li><a href="https://www.webqdkf.com"><ion-icon name="chatbubble-outline"></ion-icon></a></li>
        <div id="marker"></div>
    </ul>
    <script type="module" src="https://unpkg.com/ionicons@5.5.2/dist/ionicons/ionicons.esm.js"></script>
    <script nomodule src="https://unpkg.com/ionicons@5.5.2/dist/ionicons/ionicons.js"></script>


    <script>
        let marker = document.querySelector('#marker');
        let list = document.querySelectorAll('ul li');


        function moveIndicator(e){
            marker.style.left = e.offsetLeft+'px';
            marker.style.width = e.offsetWidth+'px';
        }


        list.forEach(link => {
            link.addEventListener('mousemove', (e) => {
                moveIndicator(e.target);
            })
        })


        // add active class in hovered list item
       function activeLink(){
        list.forEach((item) =>
        item.classList.remove('active'));
        this.classList.add('active');
       }


       list.forEach((item) =>
       item.addEventListener('mouseover', activeLink));
</script>
</body>
</html>

CSS代码：

*
{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body 
{
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: #1e2759;
}
ul 
{
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 10px;
  box-shadow: 0 5px 25px rgba(0,0,0,0.25);
}
ul li 
{
  list-style: none;
}
ul li a 
{
  position: relative;
  color: #fff;
  text-decoration: none;
  display: inline-block;
  padding: 20px 30px;
  z-index: 1000;
  backdrop-filter: blur(15px);
}
ul li a ion-icon 
{
  font-size: 2.5em;
  pointer-events: none;
  opacity: 0.25;
  transition: 0.25s;
}
ul li.active a ion-icon
{
  opacity: 1;
}
#marker 
{
  position: absolute;
  top: 0;
  transition: 0.5s;
  z-index: 1;
}
#marker::before 
{
  content: '';
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 40px;
  border-radius: 8px;
}
ul li:nth-child(1).active ~ #marker::before  
{
  background: #5da6ff;
  box-shadow: 0 0 15px #5da6ff,
  0 0 30px #5da6ff,
  0 0 45px #5da6ff,
  0 0 60px #5da6ff;
}
ul li:nth-child(2).active ~ #marker::before  
{
  background: #ff0;
  box-shadow: 0 0 15px #ff0,
  0 0 30px #ff0,
  0 0 45px #ff0,
  0 0 60px #ff0;
}
ul li:nth-child(3).active ~ #marker::before  
{
  background: #0f0;
  box-shadow: 0 0 15px #0f0,
  0 0 30px #0f0,
  0 0 45px #0f0,
  0 0 60px #0f0;
}
ul li:nth-child(4).active ~ #marker::before  
{
  background: #df2fff;
  box-shadow: 0 0 15px #df2fff,
  0 0 30px #df2fff,
  0 0 45px #df2fff,
  0 0 60px #df2fff;
}
ul li:nth-child(5).active ~ #marker::before  
{
  background: #ff308f;
  box-shadow: 0 0 15px #ff308f,
  0 0 30px #ff308f,
  0 0 45px #ff308f,
  0 0 60px #ff308f;
}