Phase 22 · Build Portfolio Projects
ProjectsCalculator
Part of the Frontend Developer Roadmap.
Summary
Revisit the calculator project with production polish — clean architecture, keyboard support, history, and thorough edge-case handling — a strong 'simple but well-executed' portfolio piece.
How to Learn This
- 1Add calculation history and the ability to reuse a previous result.
- 2Write unit tests for the arithmetic logic, separated from the UI.
- 3Polish the UI with proper animations and responsive design.
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