| 本文实例给大家分享了一个用原生JS实现的比较实用的网页导航条特效，当页面滚动时，导航条会发生变化，效果如下： 
以下是代码实现，欢迎大家复制粘贴和收藏。 <!DOCTYPE html><html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>原生JS实现网页导航条特效</title> <style> * { margin: 0; padding: 0; box-sizing: border-box; word-wrap: break-word; font-family: '微软雅黑', sans-serif; } body { background: #000; min-height: 200vh; } header { position: fixed; top: 0; left: 0; width: 100%; display: flex; align-items: center; justify-content: space-between; transition: 0.6s; padding: 40px 100px; z-index: 2; } header.sticky { padding: 5px 100px; background: #fff; } header .logo { position: relative; font-weight: 700; color: #fff; text-decoration: none; font-size: 2em; text-transform: uppercase; letter-spacing: 2px; transition: 0; } header ul { position: relative; display: flex; justify-content: center; align-items: center; } header ul li { position: relative; list-style: none; } header ul li a { position: relative; margin: 0 15px; text-decoration: none; color: #fff; letter-spacing: 2px; font-weight: 500px; transition: 0.5s; } .banner { position: relative; width: 100%; height: 100vh; background: url(bg.jpg); background-size: cover; } header.sticky .logo, header.sticky ul li a { color: #000; } </style></head> <body> <header> <a href="#" class="logo">Logo</a> <ul> <li><a href="#" >首页</a></li> <li><a href="#" >关于</a></li> <li><a href="#" >服务</a></li> <li><a href="#" >作品</a></li> <li><a href="#" >联系</a></li> </ul> </header> <section class="banner"></section> <script> window.addEventListener('scroll', () => { let header = document.querySelector('header') // 重要属性 header.classList.toggle('sticky', window.scrollY > 0) }) </script></body> </html>以下是代码中所引用的图片 bg.jpg 
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