The Classic Problem (Pre-React 17) Before React 17, you needed to import React in every file using JSX because JSX was transformed into React.createElement() calls: Without this import, you’d get….
Forgetting to Import React in JSX The Classic Error Before React 17, you’d encounter this error when forgetting to import React: React 17+ Automatic Runtime Good news: Since React 17….
Solving “React not defined” Reference Error Why This Error Occurs The “React not defined” error typically happens when: Fixes for Different Scenarios 1. Basic Fix – Add React Import 2…..
