A responsive calculator built using HTML, CSS, and JavaScript that supports both mouse and keyboard input. The application performs basic arithmetic operations, validates user input, and provides a smooth calculator experience similar to desktop calculators.
- Addition, Subtraction, Multiplication, Division
- Percentage Calculations
- Clear Display (AC)
- Delete Last Character (DE)
- Keyboard Support
- Input Validation
- Error Handling
- Continuous Calculations
- Responsive User Interface
- HTML5
- CSS3
- JavaScript (ES6)
| Key | Action |
|---|---|
| 0-9 | Number Input |
| + - * / % | Operators |
| Enter | Calculate Result |
| Backspace | Delete Last Character |
| Escape | Clear Display |
simple-calculator/
├── index.html
├── style.css
├── script.js
├── README.md
├── .gitignore
└── screenshots/
- Download or clone the repository
- Open index.html in a browser
- Start calculating
This project demonstrates:
- DOM Manipulation
- Event Handling
- Keyboard Events
- Conditional Logic
- Input Validation
- Error Handling
- State Management
- Scientific Calculator Functions
- Calculation History
- Dark/Light Theme Toggle
- Memory Operations
- Mobile Optimization