Frontend Mentor - Tip calculator app solution

This is a solution to the Tip 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
  • Live deployment preview
• My process
  • Built with
  • What I learned
  • Continued development

Overview

The challenge

Users should be able to:

• View the optimal layout for the app depending on their device's screen size
• See hover states for all interactive elements on the page
• Calculate the correct tip and total cost of the bill per person
• Reset fields to input new numbers
• See an error if input is zero

Screenshots

Live deployment preview

tip-splitty.vercel.app

My process

Built with

• React.js
• Redux, react-redux, Redux Toolkit
• SASS (scss) & CSS modules

What I learned

I learned a bit about useCallback and useMemo hooks and how to deal with stale values from useRef (component reloads, but ref points to "former" value).

Continued development

I strongly believe the current component structure is not ideal. Also, I resorted to redux to help with state management, although it could have been done better with context and a better structure.