How To Create a Scroll Indicator with CSS and JavaScript

Creating a scroll indicator with CSS and JavaScript is a great way to add a touch of elegance to your website.

Not only does it give your users an idea of how much content is left to scroll through, but it also helps them navigate your site more easily.

In this tutorial, we will go through the steps of creating a scroll indicator using CSS and JavaScript.

Step 1: Create the HTML

The first step in creating a scroll indicator is to create the HTML.

The HTML will consist of a container element, which will hold the scroll indicator, and a child element, which will be the actual indicator.

For this example, we will be using a div as the container element and a span as the child element.

<div id="scroll-container">
  <span id="scroll-indicator"></span>
</div>

Step 2: Add CSS

Next, we will add some CSS to style the scroll indicator.

The CSS will be used to give the indicator its shape and size, as well as its position on the page.

For this example, we will be using a simple rectangle as the indicator.

#scroll-container {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%%;
  height: 5px;
}

#scroll-indicator {
  width: 0;
  height: 100%%;
  background-color: #00ff00;
}

Step 3: Add JavaScript

The final step is to add the JavaScript that will control the scroll indicator.

The JavaScript will be used to determine how far the user has scrolled, and then update the width of the indicator accordingly.

For this example, we will be using the window.onscroll event to check for scroll events.

var container = document.getElementById("scroll-container");
var indicator = document.getElementById("scroll-indicator");

window.onscroll = function() {
  var scrollPercent = (document.body.scrollTop + document.documentElement.scrollTop) / (document.documentElement.scrollHeight - document.documentElement.clientHeight);
  indicator.style.width = scrollPercent * 100 + "%%";
}

And that’s it! You now have a working scroll indicator that you can use on your website.

You can further customize the indicator by changing the shape, size, and color.

You can also change the position of the indicator by adjusting the CSS.

In conclusion, creating a scroll indicator with CSS and JavaScript is a great way to add a touch of elegance to your website and make it more user-friendly.

The process is simple, and with a little bit of creativity, you can create a scroll indicator that perfectly matches the style of your website.