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Cash Register Project | freeCodeCamp JavaScript Algorithms Certification

I developed this Cash Register project as part of freeCodeCamp’s JavaScript Algorithms and Data Structures certification. This project builds on skills I honed in my earlier Telephone Validator Project and demonstrates my proficiency in handling financial calculations, data structures, and problem-solving with JavaScript.

Project Details

Overview

The Cash Register project demonstrates the ability to handle complex financial calculations and data structure manipulations in JavaScript. It showcases skills in problem-solving, particularly in dealing with currency calculations and cash drawer management.

Key Features

  • Accurate change calculation based on purchase price and payment
  • Handles multiple US currency units (penny to $100 bill)
  • Assesses cash drawer status and returns appropriate messages
  • Core function: checkCashRegister(price, cash, cid) returns an object with status and change array

Development Process

As a blind developer, I faced several challenges in this project:

  • Floating Point Precision: Implemented rounding techniques to ensure accurate calculations.
  • JavaScript Complexity: Carefully planned and tested complex logic, especially with nested conditions and array manipulations.
  • Accessibility Considerations: Utilized pre-written CSS from freeCodeCamp, allowing focus on JavaScript logic. Ensured clean, well-commented code for improved readability.

Learning Outcomes

This project provided valuable experience in:

  • Improved skills in handling financial calculations in JavaScript
  • Enhanced understanding of data structure manipulation
  • Developed strategies for overcoming floating-point precision issues
  • Gained appreciation for the role of pre-written CSS in improving project accessibility for visually impaired developers

This project demonstrates my ability to tackle complex programming challenges, adapt to language-specific quirks, and create functional solutions while considering accessibility. Explore more of my projects, including earlier ones like the Telephone Validator, on my portfolio page.

Additional Resources

Live Demo

Below is an interactive live demo of the Cash Register project. Use this frame to explore the functionality directly on this page:


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