简单实现一个导航菜单实现一个简单导航菜单........................................

实现一个简单导航菜单

演示.gif

<!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>Document</title>
  <style>
    .container {
      display: flex;
    }
    .son {
      width: 50px;
      height: 50px;
      margin-left: 10px;
      background: #c0ce98;
    }
    .son:hover {
      background: #9ec1c2 !important; 
      cursor: pointer;
    }
    .active {
      background: #9ec1c2;
    }
    .active ~ .son {
      background: #c0ce98;
    }
    
  </style>
</head>
<body>
  <div class="container">
    <div data-nav="key1" class="son"></div>
    <div data-nav="key2" class="son"></div>
    <div data-nav="key3" class="son"></div>
    <div data-nav="key4" class="son"></div>
    <div data-nav="key5" class="son"></div>
  </div>
  <script>
    const container = document.querySelector('.container')
    const navs = document.querySelectorAll('.son')
    container.addEventListener('click', (e) => {
      const targetDom = e.target
      if(!targetDom.hasAttribute('data-nav')) return //判断是否命中的是子元素（是否含有自定义属性data-nav）
      const key = e.target.dataset.nav //获取对应的自定义属性值:key1
      
      reset() //初始化nav的样式
      targetDom.classList.add('active') //添加激活样式
    })

    const reset = () => {
      navs.forEach(nav => {
        nav.setAttribute('class', 'son')
      })
    }
  </script>
</body>
</html>