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

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

• Solution URL: Solution URL
• Live Site URL: Live Site URL

My process

Built with

• Tailwindcss
• Data Attributes
• Flexbox
• Vanilla JS

What I learned

One of the key concepts I learned during the course of this challenge was how to configure tailwindcss to my specific needs. I learned how to configure color, font-size, width, height etc. The real game changer was discovering how to configure data attributes in tailwind. It simplified my implementation of theme selection.

const plugin = require('tailwindcss/plugin')

module.exports = {
  content: ["./src/**/*.{html,js}"],
  theme: {
    colors: {
      // Theme Colors
    },
    extend: {
      fontSize : {
        "xxs" : "0.3rem"
      },
      width : {
        "1.75" : "0.4375rem",
        "key-shadow-width" : "3px"
      },
      height : {
        "1.75" : "0.4375rem"
      },
    },
  },
  plugins: [
    plugin(({ addVariant }) => {
      addVariant('theme-1', '&[data-theme="theme-1"]')
      addVariant('theme-2', '&[data-theme="theme-2"]')
      addVariant('theme-3', '&[data-theme="theme-3"]')
    })
  ],
}

Useful resources

• Stake Overflow