Full Stack Open — learning journey

My exercises, drills and training apps while refining my frontend development skills.

Concepts I learned so far

JavaScript

• variables and assignment (let, const) // 23 Aug 2026
• objects and arrays, nested data structures // 25 Aug 2026
• reference vs value — shared objects, copies, === // 27 Aug 2026
• transforming arrays with .map // 28 Aug 2026
• picking and searching arrays with .filter and .find // 28 Aug 2026

React (exercises 1.1–1.5)

• components and props // 24 Aug 2026
• JSX // 23 Aug 2026
• composing an app from small components // 24 Aug 2026
• rendering lists from data with .map — the data decides how many rows // 28 Aug 2026
• conditional rendering (&&, ternary) // 26 Aug 2026

Next up

• reading TypeScript
• handling missing data (?. ?? &&)
• reading tests
• how translations work (i18n basics)
• component state and events (useState)
• effects and hooks (useEffect)
• async/await
• fetching and caching server data (TanStack Query)
• writing tests
• URL state and performance hooks (useMemo, useCallback)
• where state lives — component, URL, server, store
• forms and validation (zod)
• server components (Next.js)
• i18n end-to-end