This training is for you if
- you want to organize your knowledge and see how to apply it in day-to-day work
- you work on applications or tools that need to stay readable, maintainable, and testable
- you value practical exercises, trade-off discussions, and examples close to real projects
This is not the best choice if
- you are looking only for a theoretical lecture without workshop practice
- you need a very basic introduction to programming from scratch
- you expect ready-made recipes without discussing context, constraints, and consequences
Trainer
Mateusz
Jabłoński
Senior Frontend Developer, trainer, and author of technical materials. Since 2016, I have been running training sessions on JavaScript, TypeScript, React, testing, and tools that support software developers.
14+years of experience
2016teaching since
4.7 / 5based on 143 responses
Training program
Introduction
- Characteristics and core principles of the library
- Environment and developer tools setup
- JavaScript / TypeScript in the context of React
- How the Virtual DOM works
React Fundamentals
- Introduction to JSX syntax
- Creating, configuring and rendering components
- State management and state sharing
- Event handling
- Component lifecycle
- Debugging and troubleshooting
React Hooks
- Overview of how hooks work under the hood
- Hook best practices and common pitfalls
- Immutable state management with useState and useReducer
- Correct patterns for using useEffect in StrictMode
- Working with mutable state via useRef — best practices
- Performance optimizations with hooks such as useMemo, useCallback, etc.
React in Practice
- Building complex views
- Styling — solution overview and theme implementation
- Working with forms
- Routing
- Best practices
- Communicating with the backend
- State management strategies
Advanced React
- Routing, meta-frameworks, and Next.js
- Form Hooks — form state and validation
- Server Components, Server Actions, and useOptimistic
- Memoization and advanced optimizations
- Suspense and lazy loading
Working with a Selected State Management Mechanism
- React Context: Creating context providers and consumers
- React Context: Optimization and best practices
Redux Toolkit Store (optional)
- Architectural principles
- Immutable state modeling, reducers
- Actions and action creators
- Integration with React, re-selectors
- When to choose Redux vs Context?
- Working with Redux DevTools
MobX Observable (optional)
- How MobX State Tree works
- Practical usage patterns
- Working with DevTools
- Overview of alternatives: Jotai vs Zustand vs Recoil
Testing (optional)
- Configuring jest/vitest with Testing Library
- Examples of using RTL selectors
- Mocking dependencies with jest
- When and what to test — discussion
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