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Roadmap
Day 17 · React 40 min 40 XP

🔁State with useState

State is memory that changes over time. When state changes, React re-renders the UI for you.

What you'll learn

  • Add state with useState
  • Update state on events
  • Understand re-rendering
Week 3 step intro

A peek inside

The useState hook

The rest of Day 17 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
  • 3 quick-glance glossary cards
  • 40 XP + streak tracking
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