Learn JavaScript and TypeScript as a Java Developer -Build Modern Web Apps

Applying strict Java OOP patterns (like massive inheritance trees) to React, which favors functional composition.

Actively embrace functional programming concepts. Remember: React components are just functions that return UI. Favor composition over inheritance.

Getting bogged down in CSS and styling instead of learning React logic.

Rely heavily on a component library like Material-UI (MUI). Use their pre-built components to save time and focus on TypeScript and React state.

Misunderstanding JavaScript's single-threaded Event Loop compared to Java's multi-threading.

Watch visual explanations of the JS Event Loop and practice chaining Promises vs using async/await.