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Floating navigation bar example using the Intersection Observer API https://laracasts.com/series/how-do-i/episodes/25
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<!DOCTYPE html> | |
<html> | |
<head> | |
<title>Floating Navigation</title> | |
<link href="https://unpkg.com/tailwindcss@^1.0/dist/tailwind.min.css" rel="stylesheet"> | |
<style> | |
@keyframes slide-nav-down { | |
100% { | |
transform: translateY(0); | |
} | |
} | |
nav.is-floating { | |
position: sticky; | |
top: 0; | |
transform: translateY(-100%); | |
animation: slide-nav-down .3s ease; | |
animation-fill-mode: forwards; | |
} | |
</style> | |
</head> | |
<body> | |
<nav class="px-10 bg-gray-300 mb-10 flex justify-between py-4"> | |
<div> | |
<h1 class="font-bold text-lg uppercase">Laracasts</h1> | |
</div> | |
<div> | |
<a href="#" class="px-2">Home</a> | |
<a href="#" class="px-2">About</a> | |
<a href="#" class="px-2">Blog</a> | |
<a href="#" class="px-2">Contact</a> | |
</div> | |
</nav> | |
<section class="px-10"> | |
<div class="flex -mx-4 mb-6"> | |
<div class="w-1/3 h-32 bg-gray-500 mx-4"></div> | |
<div class="w-1/3 h-32 bg-gray-500 mx-4"></div> | |
<div class="w-1/3 h-32 bg-gray-500 mx-4"></div> | |
</div> | |
<div class="flex -mx-4 mb-6"> | |
<div class="w-1/3 h-32 bg-gray-500 mx-4"></div> | |
<div class="w-1/3 h-32 bg-gray-500 mx-4"></div> | |
<div class="w-1/3 h-32 bg-gray-500 mx-4"></div> | |
</div> | |
<div class="flex -mx-4 mb-6"> | |
<div class="w-1/3 h-32 bg-gray-500 mx-4"></div> | |
<div class="w-1/3 h-32 bg-gray-500 mx-4"></div> | |
<div class="w-1/3 h-32 bg-gray-500 mx-4"></div> | |
</div> | |
<div class="flex -mx-4 mb-6"> | |
<div class="w-1/3 h-32 bg-gray-500 mx-4"></div> | |
<div class="w-1/3 h-32 bg-gray-500 mx-4"></div> | |
<div class="w-1/3 h-32 bg-gray-500 mx-4"></div> | |
</div> | |
<div class="flex -mx-4 mb-6"> | |
<div class="w-1/3 h-32 bg-gray-500 mx-4"></div> | |
<div class="w-1/3 h-32 bg-gray-500 mx-4"></div> | |
<div class="w-1/3 h-32 bg-gray-500 mx-4"></div> | |
</div> | |
<div class="flex -mx-4 mb-6"> | |
<div class="w-1/3 h-32 bg-gray-500 mx-4"></div> | |
<div class="w-1/3 h-32 bg-gray-500 mx-4"></div> | |
<div class="w-1/3 h-32 bg-gray-500 mx-4"></div> | |
</div> | |
</section> | |
<section id="featured" class="px-10"> | |
<h1 class="font-bold text-lg mt-8 mb-2">More</h1> | |
<div class="flex -mx-4 mb-6"> | |
<div class="w-1/3 h-32 bg-green-500 mx-4"></div> | |
<div class="w-1/3 h-32 bg-green-500 mx-4"></div> | |
<div class="w-1/3 h-32 bg-green-500 mx-4"></div> | |
</div> | |
<div class="flex -mx-4 mb-6"> | |
<div class="w-1/3 h-32 bg-green-500 mx-4"></div> | |
<div class="w-1/3 h-32 bg-green-500 mx-4"></div> | |
<div class="w-1/3 h-32 bg-green-500 mx-4"></div> | |
</div> | |
<div class="flex -mx-4 mb-6"> | |
<div class="w-1/3 h-32 bg-green-500 mx-4"></div> | |
<div class="w-1/3 h-32 bg-green-500 mx-4"></div> | |
<div class="w-1/3 h-32 bg-green-500 mx-4"></div> | |
</div> | |
<div class="flex -mx-4 mb-6"> | |
<div class="w-1/3 h-32 bg-green-500 mx-4"></div> | |
<div class="w-1/3 h-32 bg-green-500 mx-4"></div> | |
<div class="w-1/3 h-32 bg-green-500 mx-4"></div> | |
</div> | |
<div class="flex -mx-4 mb-6"> | |
<div class="w-1/3 h-32 bg-green-500 mx-4"></div> | |
<div class="w-1/3 h-32 bg-green-500 mx-4"></div> | |
<div class="w-1/3 h-32 bg-green-500 mx-4"></div> | |
</div> | |
<div class="flex -mx-4 mb-6"> | |
<div class="w-1/3 h-32 bg-green-500 mx-4"></div> | |
<div class="w-1/3 h-32 bg-green-500 mx-4"></div> | |
<div class="w-1/3 h-32 bg-green-500 mx-4"></div> | |
</div> | |
</section> | |
<script> | |
(function (nav) { | |
let observer = new IntersectionObserver(entries => { | |
if (entries[0].isIntersecting) { | |
nav.classList.add('is-floating'); | |
} else { | |
nav.classList.remove('is-floating'); | |
} | |
}, { | |
threshold: .25 | |
}); | |
observer.observe(document.querySelector('#featured')); | |
})(document.querySelector('nav')); | |
</script> | |
</body> | |
</html> |
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