juniorReact Hooks
What are Rules of Hooks in React?
Updated May 6, 2026
Short answer
Hooks must be called at the top level and only inside React functions.
Deep explanation
Hooks cannot be used inside loops, conditions, or nested functions to preserve call order.
Real-world example
Ensures consistent hook execution order across renders.
Common mistakes
- Calling hooks conditionally inside if blocks.
Follow-up questions
- Why does hook order matter?
- Can hooks be used in class components?