JavaScriptBeginnerβ Featuredπ₯ Trending
Calculator with Scientific Mode
A beautiful calculator with basic and scientific modes, keyboard support, calculation history, and localStorage persistence.
β±οΈ2β3 hours
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Added: Jan 17, 2026
About This Project
This Calculator is a beginner-friendly JavaScript project that covers fundamental
programming concepts like event handling, state management, and DOM manipulation.
Features include basic arithmetic operations, scientific functions (sin, cos, tan, log, etc.),
keyboard input support, calculation history with localStorage, and a clean responsive UI.
Perfect for learning JavaScript basics while building a practical, portfolio-worthy project.
Key Features
- βBasic arithmetic operations (+, -, Γ, Γ·)
- βScientific mode (sin, cos, tan, log, ln, β, xΒ², xΒ³, xΚΈ, n!)
- βPercentage calculation
- βSign toggle (+/-)
- βKeyboard input support
- βCalculation history with localStorage
- βClick history to reuse values
- βError handling (division by zero, etc.)
- βResponsive design
- βClean modern UI
What You'll Learn
- πEvent handling (click and keyboard)
- πState management with variables
- πDOM manipulation
- πMath operations in JavaScript
- πLocalStorage for persistence
- πConditional logic
- πFunction organization
- πCSS Grid layout
- πResponsive design
Tech Stack
HTML5CSS3Vanilla JavaScript (ES6+)LocalStorage APIFont Awesome
Tags
#calculator#math#javascript#beginner#keyboard#scientific#portfolio-project