Posted By
Bajarangi soft ,
Posted On 06-10-2020
Create a Scroll Indicator
Step 1: Create index.html and implement below code.
<div class="header">
<h2>Scroll Indicator</h2>
<div class="progress-container">
<div class="progress-bar" id="myBar"></div>
</div>
</div>
<div class="container">
<br>
<div class="text-center">
<h1 style="color: tomato">How To Create A Scroll Indicator Using CSS And JavaScript</h1>
</div>
<div class="well">
<div class="content">
<h3>Scroll Down to See The Effect</h3>
<p>We have created a "progress bar" to <b>show how far a page has been scrolled</b>.</p>
<p>It also <b>works when you scroll back up</b>.</p>
<p>It is even <b>responsive</b>! Resize the browser window to see the effect.</p>
<p>Some text to enable scrolling.. Lorem ipsum dolor sit amet, illum definitiones no quo, maluisset concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam omnis evertitur eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae voluptatibus.</p>
<p>Some text to enable scrolling.. Lorem ipsum dolor sit amet, illum definitiones no quo, maluisset concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam omnis evertitur eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae voluptatibus.</p>
<p>Some text to enable scrolling.. Lorem ipsum dolor sit amet, illum definitiones no quo, maluisset concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam omnis evertitur eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae voluptatibus.</p>
<p>Some text to enable scrolling.. Lorem ipsum dolor sit amet, illum definitiones no quo, maluisset concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam omnis evertitur eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae voluptatibus.</p>
<p>Some text to enable scrolling.. Lorem ipsum dolor sit amet, illum definitiones no quo, maluisset concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam omnis evertitur eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae voluptatibus.</p>
<p>Some text to enable scrolling.. Lorem ipsum dolor sit amet, illum definitiones no quo, maluisset concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam omnis evertitur eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae voluptatibus.</p>
<p>Some text to enable scrolling.. Lorem ipsum dolor sit amet, illum definitiones no quo, maluisset concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam omnis evertitur eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae voluptatibus.</p>
<p>Some text to enable scrolling.. Lorem ipsum dolor sit amet, illum definitiones no quo, maluisset concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam omnis evertitur eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae voluptatibus.</p>
<p>Some text to enable scrolling.. Lorem ipsum dolor sit amet, illum definitiones no quo, maluisset concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam omnis evertitur eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae voluptatibus.</p>
<p>Some text to enable scrolling.. Lorem ipsum dolor sit amet, illum definitiones no quo, maluisset concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam omnis evertitur eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae voluptatibus.</p>
</div>
</div></div>
Step 2: Now implement CSS code to indicates scroll.
<style>
body {
margin: 0;
font-size: 28px;
font-family: Arial, Helvetica, sans-serif;
}
.header {
position: fixed;
top: 0;
z-index: 1;
width: 100%;
background-color: #f1f1f1;
}
.header h2 {
text-align: center;
}
.progress-container {
width: 100%;
height: 8px;
background: #ccc;
}
.progress-bar {
height: 8px;
background: tomato;
width: 0%;
}
.content {
padding: 100px 0;
margin: 50px auto 0 auto;
width: 80%;
}
</style>
Step 3: Now Implement java script to scroll.
<script>
// When the user scrolls the page, execute myFunction
window.onscroll = function() {myFunction()};
function myFunction() {
var winScroll = document.body.scrollTop || document.documentElement.scrollTop;
var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;
var scrolled = (winScroll / height) * 100;
document.getElementById("myBar").style.width = scrolled + "%";
}
</script>
Complete Code For Creating A Scroll Indicator Using CSS And JavaScript
<!DOCTYPE html>
<html>
<head>
<title>How To Create A Scroll Indicator Using CSS And JavaScript</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
</head>
<style>
body {
margin: 0;
font-size: 28px;
font-family: Arial, Helvetica, sans-serif;
}
.header {
position: fixed;
top: 0;
z-index: 1;
width: 100%;
background-color: #f1f1f1;
}
.header h2 {
text-align: center;
}
.progress-container {
width: 100%;
height: 8px;
background: #ccc;
}
.progress-bar {
height: 8px;
background: tomato;
width: 0%;
}
.content {
padding: 100px 0;
margin: 50px auto 0 auto;
width: 80%;
}
</style>
<body>
<div class="header">
<h2>Scroll Indicator</h2>
<div class="progress-container">
<div class="progress-bar" id="myBar"></div>
</div>
</div>
<div class="container">
<br>
<div class="text-center">
<h1 style="color: tomato">How To Create A Scroll Indicator Using CSS And JavaScript</h1>
</div>
<div class="well">
<div class="content">
<h3>Scroll Down to See The Effect</h3>
<p>We have created a "progress bar" to <b>show how far a page has been scrolled</b>.</p>
<p>It also <b>works when you scroll back up</b>.</p>
<p>It is even <b>responsive</b>! Resize the browser window to see the effect.</p>
<p>Some text to enable scrolling.. Lorem ipsum dolor sit amet, illum definitiones no quo, maluisset
concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam omnis evertitur
eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae
voluptatibus.</p>
<p>Some text to enable scrolling.. Lorem ipsum dolor sit amet, illum definitiones no quo, maluisset
concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam omnis evertitur
eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae
voluptatibus.</p>
<p>Some text to enable scrolling.. Lorem ipsum dolor sit amet, illum definitiones no quo, maluisset
concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam omnis evertitur
eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae
voluptatibus.</p>
<p>Some text to enable scrolling.. Lorem ipsum dolor sit amet, illum definitiones no quo, maluisset
concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam omnis evertitur
eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae
voluptatibus.</p>
<p>Some text to enable scrolling.. Lorem ipsum dolor sit amet, illum definitiones no quo, maluisset
concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam omnis evertitur
eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae
voluptatibus.</p>
<p>Some text to enable scrolling.. Lorem ipsum dolor sit amet, illum definitiones no quo, maluisset
concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam omnis evertitur
eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae
voluptatibus.</p>
<p>Some text to enable scrolling.. Lorem ipsum dolor sit amet, illum definitiones no quo, maluisset
concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam omnis evertitur
eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae
voluptatibus.</p>
<p>Some text to enable scrolling.. Lorem ipsum dolor sit amet, illum definitiones no quo, maluisset
concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam omnis evertitur
eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae
voluptatibus.</p>
<p>Some text to enable scrolling.. Lorem ipsum dolor sit amet, illum definitiones no quo, maluisset
concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam omnis evertitur
eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae
voluptatibus.</p>
<p>Some text to enable scrolling.. Lorem ipsum dolor sit amet, illum definitiones no quo, maluisset
concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam omnis evertitur
eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae
voluptatibus.</p>
</div>
</div>
<script>
// When the user scrolls the page, execute myFunction
window.onscroll = function () {
myFunction()
};
function myFunction() {
var winScroll = document.body.scrollTop || document.documentElement.scrollTop;
var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;
var scrolled = (winScroll / height) * 100;
document.getElementById("myBar").style.width = scrolled + "%";
}
</script>
</div>
</body>
</html>