Frontend Mentor - Calculator app solution

This is a solution to the Calculator app challenge on Frontend Mentor. Frontend Mentor challenges help you improve your coding skills by building realistic projects.

Table of contents

• Overview
  • The challenge
  • Screenshot
  • Links
• My process
  • Built with
  • What I learned
  • Useful resources
• Author

Overview

The challenge

Users should be able to:

• See the size of the elements adjust based on their device's screen size
• Perform mathmatical operations like addition, subtraction, multiplication, and division
• Adjust the color theme based on their preference
• Bonus: Have their initial theme preference checked using prefers-color-scheme and have any additional changes saved in the browser

Screenshot

Links

• Live Site URL

My process

Built with

• Nextjs
• JavaScript
• JSX
• Sass
• JavaScript
• Flexbox
• Desktop-first workflow

What I learned

For the first time ever, besides having dark mode in Sass, I also detected, using JS, the user's preferred theme according to the system settings using the matchMedia method.

Useful resources

• How to Create a Dark Mode in Sass
• Ekaterine Mitagvaria's code
• useEffect (to show the result)
• Run useEffect Only Once
• matchMedia() method

Author

• Github - daniel-web-developer
• Frontend Mentor - @daniel-web-developer