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Complex date calculations based on user input. Character Counter: Tracking input length for text areas.

Practical application of mathematical logic and button events.

String manipulation and random number generation for security. Password Strength Indicator: Real-time regex validation. Complex date calculations based on user input

Handling user input and percentage calculations. Stopwatch: Advanced use of setInterval and clearInterval .

Manipulating CSS variables and persisting user preferences. Complex date calculations based on user input

Integrating language APIs for definitions and phonetics. Currency Converter: Fetching real-time exchange rates.

Utilizing the OpenWeatherMap API to display localized climate data. Complex date calculations based on user input

Interactive content display using class toggling.

Managing multiple data entries with local storage persistence.

This curriculum is designed to move from fundamental layout structures to interactive logic and advanced API integration. Phase 1: Essential UI & Utility (1–20)