2025 10 03 15 COURTNEY YATTEAU CONGRESO REACT ALICANTE The international React js conference in S
summary
Three React Leaflet mapping demos actually show hidden features wired to real rules: a sunset marker appears only during 2.5 km radius (~30–35 min walk) golden hour computed by suncal, an area nudge uses map move events to detect calm zones, and a pin at zoom ≥18 triggers Gemini fact fetch that shows an AI-generated fun fact. Components use effects that run periodically — every 30s with cleanup on unmount — boolean flags, props-as-rules, and reusability; all demos work live with conditional render and clear retry/reset behavior.
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chapters (18)
- 0:00Hidden React features
- 2:17Why use hidden features
- 3:25Hidden features purpose
- 4:06React enables hidden features
- 5:11Hidden features examples
- 7:37Demo: Golden hour spots
- 10:47Demo: Calm areas suggestions
- 12:12Demo: AI fun facts
- 15:07Code breakdown demos
- 18:40SECRET framework
- 19:01SECRET: Surprise and delight
- 20:24SECRET: Event driven triggers
- 21:47SECRET: Conditional rendering
- 22:29SECRET: Reusability
- 23:16SECRET: Engagement nudges
- 24:18SECRET: Toggling state
- 25:42Use cases beyond maps
- 27:30Conclusion
