我想在页面上放置粘性导航。现在,它不起作用(看看jsfiddle)。尝试了已经不同的事情来使其工作。还尝试了来自不同网站的不同解决方案,但似乎没有任何效果。你能帮我吗?
HTML
<!DOCTYPE html>
<html lang="de">
<head>
<meta charset="utf-8">
<title>Titel</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<header class="parallax">
<nav class="header-navigation">
<div class="header-navigation-child">
<div class="logo">Logo</div>
<div class="navigation">Hello World</div>
</div>
</nav>
</header>
<main>
<article>
<p>
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</p>
</article>
</main>
<footer>
<nav></nav>
</footer>
<script src="https://code.jquery.com/jquery-3.3.1.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>
<script src="index.js"></script>
</body>
</html>
CSS
body, html {
font: 16px Arial, sans-serif;
height: 100%;
margin: 0;
}
.parallax {
background-image: url("img/parallax.jpg");
background-position: center;
background-repeat: no-repeat;
background-size: cover;
height: 100%;
}
.header-navigation {
height: 60px;
background-color: white;
position: relative;
overflow: hidden;
}
.header-navigation-child {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
width: 100%;
height: 30%;
margin: auto;
}
.logo {
float: left;
padding-left: 75px;
}
.navigation {
float: right;
padding-right: 50px;
}
.content {
padding: 16px;
}
.sticky {
position: fixed;
top: 0;
width: 100%;
}
.sticky + .content {
padding-top: 60px;
}
JS
window.onscroll = function() {myFunction()};
var navbar = document.getElementById("header-navigation");
var sticky = navbar.offsetTop;
function myFunction() {
if (window.pageYOffset >= sticky) {
navbar.classList.add("sticky")
} else {
navbar.classList.remove("sticky");
}
}
https://jsfiddle.net/n1m9j62v/3/
有什么想法吗?