JSFiddle - React, Tailwind, and code Playground

by brunomuller

HTML

<script src="https://code.jquery.com/jquery-2.2.1.min.js"></script>
<div class="top-bar"></div>

<p>.</p>
<p>.</p>
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<p>.</p>
<p>.</p>
<p>.</p>
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<p>.</p>
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<p>.</p>
<p>.</p>
<p>.</p>
<p>.</p>
<p>.</p>
<p>.</p>
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<p>.</p>
<p>.</p>

CSS

.top-bar {
  background-color: #c5c5c5;
  height: 50px;
}

JavaScript

$window = $(window);

$window.on('scroll', function () {
	console.log($window.scrollTop());
  if($window.scrollTop()<0){
  	$('.top-bar').addClass('is-fixed');
  }
})