React for Advanced Developers (RCT2)

Programming, JavaScript

This three-day advanced React course is for developers with prior React experience. It focuses on advanced patterns and tools to build complex web apps, covering performance profiling, memoization (React.memo, useMemo, useCallback), React Context and lazy loading with React Router.

Through hands-on exercises you'll master Jest and React Testing Library for unit and integration tests, including mocks and hook tests. You will explore Error Boundaries, Suspense, Portals, and set up project structure with Redux, Webpack and NX monorepo.

THIS TRAINING COURSE WILL HELP YOU:

  • Deepen React skills for building complex apps
  • Use profiler and memoization to optimize performance
  • Implement global state with Context and Redux
  • Write robust tests with Jest and React Testing Library
  • Configure projects with Webpack and NX monorepo

WHO SHOULD ATTEND?

  • Experienced React developers building complex web apps
  • Developers needing performance and state management skills
  • Engineers focused on testing components and hooks
  • Anyone adopting Suspense, Error Boundaries or Portals
  • Teams planning Redux-based apps and NX monorepos

COURSE LOCATION AND AVAILABLE DATES



Choose whether to attend in person in our classroom or join online. You can select your preferred format during registration. Learn more about hybrid training.
Praha + online (optional)
Private training

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Course content:

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  • Recap of React basics
    1. Review core React concepts
    2. Working with HTTP requests
    3. Component communication
  • React Hooks
    1. Using useRef to access native DOM elements
    2. Using forwardRef
    3. Using useImperativeHandle to expose a component API
  • Performance tuning
    1. How to detect performance issues
    2. Using Profiler in Chrome and React DevTools
    3. React.memo
    4. useMemo
    5. useCallback
  • React Context
    1. Basic use of Context
    2. Advanced context encapsulation
    3. Initial context state
  • Testing with Jest
    1. Introduction to Jest
    2. Best practices for writing tests
    3. Structuring tests
    4. Jest matchers
    5. Testing exceptions
    6. Mocking
    7. Verifying behavior with spies
    8. Mocking modules
  • Testing React with React Testing Library
    1. Querying elements on the page using queries
    2. Triggering user actions
    3. Asserting state with matchers
    4. Testing components
    5. Testing hooks
  • Advanced topics
    1. Render Props
    2. Error Boundaries
    3. React Suspense
    4. React Portal
    5. Hook useReducer
  • Routing
    1. Introduction to React Router
    2. Global application layout
    3. Nesting pages using Outlet
    4. Navigation
    5. Reading URL parameters
    6. Splitting the app into parts (lazy loading)
    7. React.lazy
  • Redux
    1. Defining global state
    2. Using state slices
    3. Reading Redux state in a component
    4. Dispatching actions
  • Project setup
    1. How to choose the right libraries?
    2. Composing typical React project structures
    3. Basics and configuration of Webpack
    4. Monorepo codebase using NX
Prerequisites:
Practical experience with JavaScript and basic React concepts.
Recommended previous course:
React Framework – Building Web Applications (RCT)
Schedule:
3 days (9:00-17:00)
Price per person:
832.00 € (1 006.72 € incl. 21% VAT)

Training and learning environment

IT classroom with desks, computer monitors, and a projection screen at the front.
What does the environment for in-person IT courses look like?We hold training courses in our own classrooms equipped with modern computer equipment for each participant and a large projection screen. Each workstation is fitted with a powerful computer for seamless practical exercises, and the environment supports a calm, friendly atmosphere during training.
IT classroom with desks, computer monitors, and a projection screen at the front.
Do I need to bring my own laptop to the classroom IT course?Our training rooms are fully equipped, so you do not need to bring your own laptop. A modern computer with all necessary hardware and software is ready for you at your workstation.
Sample ICT Pro certificate of successful completion of an IT training course.
Will you receive an official certificate after completing an IT course?Yes, upon successful completion of the training course, you will receive an official ICT Pro certificate confirming your participation and acquired technical skills. You can use it to verify your qualifications or add it to your professional profile.
Exterior view of the COMGUARD office building on Sochorova Street in Brno.
Where can you find our training center in Brno?The premises of the ICT Pro training center are located on the 1st floor of the COMGUARD building at Sochorova 38 in Brno. Positioned on the border of Žabovřesky and Komín, the location is easily accessible by both car and public transport.
Exterior view of the Opatov Park office building in Prague, Chodov.
Where can you find our training center in Prague?The premises of the ICT Pro training center are located on the 1st floor of the Opatov Park building at Líbalova 1, Prague 11 – Chodov. The location provides a comfortable environment for your education with convenient access.
Fully equipped kitchenette with a coffee machine, microwave, sink, and shelves with cups and glasses.
What facilities and refreshments are available to you during training breaks?Our training centers feature a fully equipped kitchenette for a comfortable break during your courses. The facilities include a coffee machine, microwave, kettle, and a wide selection of drinks and snacks.
Coffee station featuring an automatic coffee machine, yellow and white cups, glasses, and syrups.
What beverage refreshments are available during your course?A beverage station with a coffee machine, teas, syrups, and water is at your disposal throughout the entire training session. You can enjoy a coffee or another drink of your choice anytime during breaks.
Table with sweet pastries, fruit syrups, a water dispenser, and glasses set up for training participants.
What light refreshments are provided for you during the courses?During course breaks, participants can enjoy light sweet snacks, pastries, and fruit syrups to mix their own drinks. Fresh water dispenser and plates are also available for your convenience.
Wicker baskets filled with packaged savory snacks, sweet biscuits, and snack bars.
Should I bring my own snacks to ICT Pro training?There is no need to. A wide selection of savory snacks, sweet biscuits, and snack bars is available for you during breaks. Boost your energy for all-day focus right inside the training center premises.
Outdoor wooden terrace with green surroundings by the glass building of the training center.
Can you spend training breaks in the fresh air?Yes, an outdoor terrace is available at our training center. During breaks between learning sessions, you can relax in the fresh air in a pleasant green environment.
Spacious outdoor wooden terrace with seating and views of the surrounding area.
Where can you relax during course breaks?Our training center features a spacious outdoor terrace with seating options. During breaks between learning sessions, you can step outside to relax and recharge in the fresh air.