Creating an application using React

During the workshops, participants will not only learn the key concepts of React but will primarily learn how to build applications in accordance with the best market practices. Throughout the workshop, we will go through the entire process - from requirements analysis, through component architecture design, to functionality implementation and state management. Special emphasis will be placed on code organization, reusability, and performance optimization. After completing the training, participants will be ready to independently create complex user interfaces and make informed design decisions in new and existing React projects.

Who this
training is for

This workshop works best for participants who want to turn knowledge into practical project decisions and code written in realistic conditions.

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
Get to know me

Training program

Introduction

  1. Characteristics and core principles of the library
  2. Environment and developer tools setup
  3. JavaScript / TypeScript in the context of React
  4. How the Virtual DOM works

React Fundamentals

  1. Introduction to JSX syntax
  2. Creating, configuring and rendering components
  3. State management and state sharing
  4. Event handling
  5. Component lifecycle
  6. Debugging and troubleshooting

React Hooks

  1. Overview of how hooks work under the hood
  2. Hook best practices and common pitfalls
  3. Immutable state management with useState and useReducer
  4. Correct patterns for using useEffect in StrictMode
  5. Working with mutable state via useRef — best practices
  6. Performance optimizations with hooks such as useMemo, useCallback, etc.

React in Practice

  1. Building complex views
  2. Styling — solution overview and theme implementation
  3. Working with forms
  4. Routing
  5. Best practices
  6. Communicating with the backend
  7. State management strategies

Advanced React

  1. Routing, meta-frameworks, and Next.js
  2. Form Hooks — form state and validation
  3. Server Components, Server Actions, and useOptimistic
  4. Memoization and advanced optimizations
  5. Suspense and lazy loading

Working with a Selected State Management Mechanism

  1. React Context: Creating context providers and consumers
  2. React Context: Optimization and best practices

Redux Toolkit Store (optional)

  1. Architectural principles
  2. Immutable state modeling, reducers
  3. Actions and action creators
  4. Integration with React, re-selectors
  5. When to choose Redux vs Context?
  6. Working with Redux DevTools

MobX Observable (optional)

  1. How MobX State Tree works
  2. Practical usage patterns
  3. Working with DevTools
  4. Overview of alternatives: Jotai vs Zustand vs Recoil

Testing (optional)

  1. Configuring jest/vitest with Testing Library
  2. Examples of using RTL selectors
  3. Mocking dependencies with jest
  4. When and what to test — discussion

Workshops already
behind us

Below you will find a list of workshop editions I have run. Each one means a new group, different challenges, and concrete results.

Total editions11
  • Sages

    Training scheduled

  • Aptitude Software

    Sages

    4.67(average rating)

  • Sages

    4.93(average rating)

  • Orange

    Sages

    4.45(average rating)

  • Orange

    Sages

    Training scheduled

  • Rossmann

    Sages

    4.81(average rating)

  • Asseco Poland

    Sages

    4.73(average rating)

  • Commerzbank

    Sages

    4.68(average rating)

  • Commerzbank

    Sages

    4.84(average rating)

  • Rossmann

    Sages

    4.81(average rating)

  • Deloitte

    Sages

    4.5(average rating)