Calculator

About

This project is self-hosted on a ubuntu server, it is configured with nginx and https (certbot and letsencrypt).

Requirements

1. A deployed website (using GitHub Pages) ✅
2. A public GitHub repository for your codebase ✅
3. A README.md with a short intro to the project ✅
4. At least 15 Git commits for the different stages in your development ✅
5. Be responsive and built mobile-first, it should work on different screen widths ✅
6. Accept a minimum of 2 inputs, perform an operation and show the output ✅
7. DOES NOT USE THE eval() method (as this is extremely dangerous) ✅
8. Code is highly readable (good naming and indented correctly) ✅

Approach

When planning this project and playing around in JSFiddle, I came up with four approaches I would like explore, which you can view here. In the end I went with the fourth method, which see the previous linked file for further details on the approach taken.

Features

• [✅] Simple Calculations (Two numbers and one operator).
• [✅] Complex Calculations (Multiple operators, respects the order of operations by implementing the Shunting Yard Algorithm). 🤯
• [✅] Ability to undo with the implementation of a custom state manager. 🤯
• [✅] Reset functionality. Like AC button on most calculators.
• [✅] Light and Dark Modes Available.
• [✅] Responsive for Mobile, Tablet and Desktop.
• [✅] Quickly convert percent to decimal.
• [✅] Ability to use +/- button.
• [✅] Ability to work with floats.
• [✅] Scientific calculator functions
• [✅] Can include brackets in expressions

Testing

Unit Tests

• [✅] convertToPostfix function
• [✅] evaluatePostfix function

E2E Tests

• [✅] Test inputting numbers
• [✅] Test inputting operators
• [✅] Test simple expressions
• [✅] Test complex expressions
• [✅] Test Exponent Functions
• [❌] Test state-manager - localStorage