New Free React Challenge: Countdown ⏱️
Source: Dev.to
Challenge Overview

Build a real countdown timer using useState and useEffect, and deal with state, side effects, and precise time updates.
Designed for beginners, but with the kind of edge cases you actually find in production.
- Estimated time: 30 minutes
- No tutorials: Just React.
Tags
- #react
- #javascript
- #frontend
- #frontendchallenge