Roadmap Week 3 step intro
Day 18 · React 35 min 40 XP
📋Lists & keys
Rendering lists is everywhere in React. The trick is map plus a unique key.
What you'll learn
- Render arrays with map
- Add stable keys
- Render list data cleanly
A peek inside
map returns JSX
The rest of Day 18 is a Pro lesson
You're on the free Explorer plan — you get the intro and the video. Go Pro to open the full guided lesson (and all 30 days).
- 2 deep-dive lessons
- A copy-paste worked example
- 3 hands-on practice tasks
- 2 quick-glance glossary cards
- 40 XP + streak tracking
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