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React

Modern React fundamentals, state management, performance and frontend architecture.

5 topics25 questions & lessons

React Fundamentals

5 questions · Open → 02

Hooks

5 questions · Open → 03

State Management

5 questions · Open → 04

Performance and Testing

5 questions · Open → 05

Frontend Architecture

5 questions · Open →

Topics

Optional study guide

See the big picture · React

Explain a UI change step by step

Start with the diagram, compare the concepts, then apply them to the lesson.

Initial screenDescribe what the user sees.
User actionChoose one click or input.
State transitionPredict the new state.
Visible resultVerify the updated interface.

At a glance
Practice step	Evidence to collect
Describe	A small component responsibility
Interact	One clear user action
Observe	The expected UI change
Check	Loading, empty and error states

Watch for this: Test behavior from a user perspective, including keyboard interaction.