🧮💱 Calculator & Currency Converter Web App

A sleek two-in-one web app featuring a smart calculator 🤖 and real-time currency converter 🌍, built with vanilla JavaScript.

Live Demo

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✨ Key Features

🧮 Calculator Page

• 🚨 Regex-powered input validation → Blocks invalid math expressions
• 🔄 Real-time evaluation → See results as you type (2+2= shows 4 instantly)
• 🗑️ Smart deletion → DEL button removes chars without breaking logic
• 🚦 Error prevention → Stops invalid submits like 5+/
• 📱 Custom keypad

📸 Calculator Page Preview

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💰 Currency Converter Page

• 🌐 160+ currencies with live rates via ExchangeRate-API
• 🔄 One-click swap ↔️ between currencies
• 📱 Mobile-friendly keypad → No annoying keyboard popups!
• 📡 Offline-friendly → Shows helpful errors when offline
• 🏷️ Dynamic descriptions → Shows full currency names (USD → US Dollar)

📸 Currency Page Preview

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🛠️ Tech Stack

Frontend	API	Magic

              | ![Fetch API](https://img.shields.io/badge/Fetch_API-5A29E4?style=flat)               | ![Responsive](https://img.shields.io/badge/Responsive-563D7C?style=flat)                           |

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🚀 Installation

git clone https://github.com/Obiorakingsley/Currency-Calculator.git
cd currency-calculator
# No dependencies! Just open index.html 🎉