JavaScript Algorithms and Data Structures Portfolio

🧠 About

This repository contains a collection of projects built as part of the freeCodeCamp JavaScript Algorithms and Data Structures Certification.

These projects demonstrate core JavaScript skills, including algorithmic thinking, DOM manipulation, object-oriented and functional programming, local storage usage, asynchronous JavaScript, and more.

The goal of this portfolio is to reinforce and apply foundational JavaScript knowledge through hands-on, interactive projects.

📚 Projects

The following certified projects were built using only the course-provided instructions and requirements.

✅ Completed

• Pyramid Generator
  Learn Introductory JavaScript
  A tool to print out a pyramid pattern using user-defined characters and height.

• Gradebook App
  Review JavaScript Fundamentals

• Role Playing Game
  Learn Basic JavaScript

• Random Background Color Changer
  Learn Basic Debugging

• Calorie Counter
  Learn Form Validation

• Rock, Paper, Scissors Game
  Review DOM Manipulation

• Music Player
  Learn Basic String and Array Methods

• Date Formatter
  Learn the Date Object

• Football Team Cards
  Learn Modern JavaScript Methods

• Todo App
  Learn localStorage

• Decimal to Binary Converter
  Learn Recursion

🕐 In Progress / Not Started

• Spam Filter
  Learn Regular Expressions

• Number Sorter
  Learn Basic Algorithmic Thinking

• Statistics Calculator
  Learn Advanced Array Methods

• Spreadsheet
  Learn Functional Programming

• Shopping Cart
  Learn Basic OOP

• Platformer Game
  Learn Intermediate OOP

• Dice Game
  Review Algorithmic Thinking

• fCC Authors Page
  Learn Fetch and Promises

• fCC Forum Leaderboard
  Learn Asynchronous Programming

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🎓 Certification Projects

Each of the following projects is a requirement to complete the certification:

The following certified projects were built independently, using only the course-provided requirements.

✅ Completed

• Palindrome Checker
  A tool that checks if a given string is a palindrome.

• Roman Numeral Converter
  Converts integers into their Roman numeral representations.

🕐 In Progress / Not Started

• Telephone Number Validator
  Validates U.S. telephone numbers using regular expressions.

• Cash Register App
  A virtual cash register that calculates change based on available currency denominations.

• RPG Creature Search App
  An interactive app that fetches and displays creature data from an RPG API.

💡 Features

• Pure JavaScript implementations (no frameworks)
• Hands-on approach to learning modern JS fundamentals
• Strong focus on algorithms, logic, and interactivity
• Real-world project applications

🛠 Technologies Used

• JavaScript (ES6+)
  Core language used throughout all lessons and projects.

• HTML5 (used optionally in browser-based projects)
  Required in projects involving forms or layout such as:

  • Palindrome Checker
  • Calorie Counter
  • Cash Register
  • RPG Creature Search App

• CSS3 (optional for styling browser-based projects)
  Not required by the curriculum, but helpful for:

  • Improving UI/UX in interactive projects
  • Personalizing project appearance (e.g., Rock, Paper, Scissors UI)

• DOM API
  Used to create interactive elements and respond to user input in:

  • Rock, Paper, Scissors
  • Calorie Counter
  • Palindrome Checker
  • Dice Game
  • Shopping Cart

• Browser APIs (localStorage, fetch)
  Used in asynchronous and stateful projects:

  • Todo App (localStorage)
  • fCC Authors Page (fetch)
  • fCC Forum Leaderboard (fetch)
  • RPG Creature Search App (fetch)

• freeCodeCamp’s Test Suite
  Automatically validates project requirements and completion. Required for all certification projects.