active nav link indicator with vanilla javascript

### tutorial: creating active nav link indicator with vanilla javascript

when building a website with multiple pages or sections, it's common to have a navigation menu where users can easily navigate between different sections. one way to enhance user experience is by adding an indicator to show which section the user is currently on. this indicator, often called an active nav link indicator, can help users quickly identify their current location within the website.

in this tutorial, we will create a simple active nav link indicator using vanilla javascript. we will add a class to the active navigation link and style it accordingly to indicate the current page or section.

#### steps to create an active nav link indicator:

1. **html structure:**
start by creating an html structure for your navigation menu. each navigation link should have a unique identifier. for example:



2. **javascript function:**
create a javascript function that will add an 'active' class to the currently active navigation link and remove it from others. this function can be triggered based on the scroll position or the page url.



3. **css styling:**
define the styles for the active class in your css file to visually indicate the active navigation link. for example:



4. **testing:**
test your active nav link indicator by scrolling through the page or navigating between sections. the navigation link corresponding to the active section should have the 'active' class applied.

#### code example:
here's a complete example combining the html, javascript, and css for creating an active nav link indicator:

by following these steps and incorporating the provided code example, you can easily create an active nav link indicator using vanilla javascript on your website. feel free to customize the styles and functionality to suit your specific requirements.

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