🎓 Array.map() - Complete JavaScript Tutorial
Автор: Frontend Interview Master
Загружено: 2026-01-06
Просмотров: 12
Array.map() - Full JavaScript Tutorial
Transform arrays with map method. Essential for data manipulation.
📚 What you'll learn:
✅ Transforming API response data into UI-friendly format (e.g., adding display names to IDs)
✅ Converting array of objects to array of specific values (e.g., extracting email addresses from user objects)
✅ Adding computed properties to each item (e.g., calculating percentages or derived values)
✅ Formatting data for display (dates, currencies, etc.)
✅ Creating new arrays for React components (mapping data to JSX elements)
⏱️ Timestamps:
0:00 Introduction
0:30 How it works
1:00 Code examples
2:30 Use cases
3:00 Common mistakes
3:30 Pro tips
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