OctoBrowser/scrollbar.txt at main · HoppouAI/OctoBrowser · GitHub

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// html
<div class="progress-container">
	<div id="progressbar" class="progress-bar"></div>
</div>

<div class="wrapper">
	<section>
		<h2>Scroll down</h2>
	</section>
	<section>
		<h2>...keep going...</h2>
	</section>
	<section>
		<h2>Almost there...</h2>
	</section>
	<section>
		<h2>I can't believe you've done this.</h2>
		<br>
		<br>
		<img src="https://i1.sndcdn.com/artworks-000153836556-yyqn60-t500x500.jpg" alt="">
	</section>
</div>

// css
@import url("https://fonts.googleapis.com/css2?family=Press+Start+2P&family=Roboto:wght@100;300&display=swap");

body {
	background-color: #333;
	font-family: "Press Start 2P", cursive;
	margin: 0;
	padding: 0;
	-ms-overflow-style: none; /* for Internet Explorer, Edge */
	scrollbar-width: none; /* for Firefox */
	overflow-y: scroll;
}

body::-webkit-scrollbar {
	display: none; /* for Chrome, Safari, and Opera */
}

.header h2 {
	text-align: center;
}

.progress-container {
	position: fixed;
	right: 10px;
	width: 8px;
	height: 90%;
	background: #222;
	border-radius: 2px;
	margin: auto;
}

.progress-bar {
	width: 8px;
	background: #d4b255;
	border-radius: 2px;
}

.progress-bar:before {
	height: 1%;
}

.glow {
	-webkit-box-shadow: 0px 0px 14px 21px rgba(212, 178, 85, 0.48);
	-moz-box-shadow: 0px 0px 14px 21px rgba(212, 178, 85, 0.48);
	box-shadow: 0px 0px 14px 21px rgba(212, 178, 85, 0.48);
}

.wrapper {
	margin-top: 10px;
	margin-bottom: 10px;
}

section {
	height: 100vh;
	text-align: center;
	display: flex;
	flex-flow: column nowrap;
	align-items: center;
	justify-content: center;
	align-content: center;
}

h2 {
	color: #f1f1f1;
}

img {
	width: 20%;
}

// js
const progressBar = document.getElementById("progressbar");
progressBar.style.height = 1 + "%";

window.onscroll = () => {
	const scroll = document.documentElement.scrollTop;
	const height =
		document.documentElement.scrollHeight - document.documentElement.clientHeight;
	let scrolled = (scroll / height) * 100;

	if (scrolled <= 1) {
		progressBar.style.height = 1 + "%";
	} else if (scrolled >= 2 && scrolled <= 99.9) {
		progressBar.style.height = scrolled + "%";
		progressBar.classList.remove("glow");
	} else if (scrolled === 100) {
		progressBar.style.height = scrolled + "%";
		// 		Do something when reached 100% scroll
		progressBar.classList.add("glow");
	}
};