How I Built an Age Calculator Using HTML, CSS and JavaScript

I recently built a simple Age Calculator web application using HTML, CSS and JavaScript.

The tool allows users to:

• Calculate exact age in years, months and days
• See total days lived
• View their next birthday countdown
• Use dark mode
• Access the tool on mobile devices

Technologies Used

• HTML
• CSS
• JavaScript
• GitHub Pages

Challenges

Some challenges included:

• Handling future dates correctly
• Making the calculator mobile friendly
• Adding dark mode support
• Setting up sitemap and SEO pages

Live Demo

You can try the tool here:

https://fq8404293-eng.github.io/age-calculator/

What I Learned

Building this project helped me learn:

• DOM manipulation in JavaScript
• Responsive web design
• Basic SEO practices
• GitHub Pages deployment

Feedback is welcome.