To create a scroll indicator with CSS and JavaScript, the code is as follows −
Example
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
body {
font-size: 28px;
margin:0px;
padding:0px;
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
.header {
position: fixed;
top: 0;
margin-bottom: 100px;
z-index: 1;
width: 100%;
background-color: #ebfffd;
}
.progressContainer {
width: 100%;
height: 20px;
background: #ccc;
}
.progressBar {
height: 20px;
background: #724caf;
width: 0%;
}
.content {
padding: 100px 0;
margin: 50px auto 0 auto;
width: 80%;
}
</style>
</head>
<body>
<div class="header">
<h1>Scroll indicator example</h1>
<div class="progressContainer">
<div class="progressBar"></div>
</div>
</div>
<div class="content">
<h1>Some headers</h1>
<h1>Some headers</h1>
<h1>Some headers</h1>
<h1>Some headers</h1>
<h1>Some headers</h1>
</div>
<script>
window.onscroll = function() {showProgress()};
function showProgress() {
var scrollCalculate = document.body.scrollTop || document.documentElement.scrollTop;
var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;
var scrolled = (scrollCalculate / height) * 100;
document.querySelector(".progressBar").style.width = scrolled + "%";
}
</script>
</body>
</html>Output
The above code will produce the following output −
On scrolling down the page the progress bar will increase as shown −
