React is a Top JavaScript library for building dynamic and interactive web applications. It is the perfect choice for developers because of its fast performance, scalability and ease of use.

Welcome to the “React Crash Course: From Zero to Hero”, where I will teach you React from the very beginning by building a real web project on practice and explaining all the React fundamentals step by step in details.

This is a crash practical course made with Love. It won't take too much of your time, like other courses. My main focus will be on teaching you only practical and real things you will need.

To make learning easier for you, I will try to explain all the terms in the simplest way possible. I've also made it modular, so you can easily navigate through the sections to find the information you need or come back to it later.

Who is this course for?

• Students who are new to React.js and want to learn it from scratch.

• JavaScript developers who have basic knowledge and want to dive deeper into React.js.

• Developers familiar with other frameworks (like Angular or Vue) who are looking to switch to React.js.

• Non-technical professionals who want to make the transition to programming and get started with React.js.

What's in this course?

BASIC Module

• Getting Started: Learn the fundamentals of React, including its key concepts like JSX, DOM, Virtual DOM, One-Way Data Binding, Component-Based Architecture. Understand how to set up your development environment (Browser, Code Editor, Node.js, npm) and effectively debug your React applications using Developer Tools.

• Creating Components: Discover how to create and manage your first React components. You'll learn how to write JSX markup, as well as how to import and export components to keep your code organized and reusable.

• Adding Interactivity: Understand how to share data between components using Props, handle user events, and conditionally render content. You’ll also learn how to render lists of items in your applications, making them dynamic and interactive.

• Styling in React: Explore various methods for styling your React applications. You’ll learn about adding inline styles, using CSS files and CSS Modules, as well as exploring alternatives like SASS and Styled Components, helping you choose the best approach for your project.

• Managing State: Gain insights into the component life-cycle and the difference between state and local variables. Learn how to use the useState hook to manage state effectively, allowing your applications to respond to user inputs and changes.

• Managing Complex State: Learn advanced techniques for managing and updating the state of nested objects and arrays in React. You’ll discover how to add, delete, and update items in array state, giving you greater control over your application's data.

TO-DO LIST Module

• Working with Form Controls: Learn how to build and manage forms in React. You'll set up a new application, structure and style form fields, handle form submission, and store form data in the state to create dynamic user inputs.

• Displaying To-Do List: Understand how to dynamically render a list of tasks. You'll explore expanding and collapsing additional form fields, structuring and styling the list, and using controlled components to manage task status.

• Advancing To-Do List Functionality: Enhance your to-do list with editing and filtering capabilities. You'll learn how to prepare components for editing, handle user input changes, delete items, and implement filtering options.

• Validating Form Data: Ensure data integrity with form validation techniques. You'll use the React Hook Form library, display and style validation errors, create validation rules with Yup, and provide custom validation logic.

• Manipulating Data via API: Learn how to interact with APIs in React applications. You'll understand REST API methods, perform asynchronous operations, fetch data, and implement CRUD functionality using an external API.

• Advanced Techniques for API Usage: Optimize API interactions in your React projects. You'll organize API calls in separate files, simplify requests with Axios, handle errors effectively, create custom hooks, display error messages, and implement loading spinners for a better user experience.

AI CHATBOT Module

• Getting Started with AI Chatbot: Learn what is generative AI, what pricing models exist for AI APIs, which APIs are free and which APIs require an account to use. How to setup development environment, quickly create a React application using Vite tool.

• Building Chatbot UI: Learn how to design and implement the core structure of the chatbot interface. This includes creating the app layout, displaying chat messages, adding a text input field, and handling message interactions within the chat component.

• Implementing Chat with AI: Discover how to connect your chatbot to Google AI (Gemini), OpenAI (ChatGPT) and DeepSeek (R1 and V3). Learn how to obtain and manage API keys, integrate the APIs for real-time chat functionality, and isolate logic for reusability.

• Streaming Messages with AI: Master the process of setting up real-time message streaming with Google AI (Gemini), OpenAI (ChatGPT) and DeepSeek AI (R1 and V3) . Understand how to handle delayed responses and provide a smooth experience for users interacting with the chatbot.

• Improving User Experience with Chat: Enhance the chatbot interface by adding features like loading states, Markdown message support, auto-resizable text fields, and auto-scrolling behavior. Implement dark mode support to make your app more versatile and user-friendly.

BONUS Module

• Key Soft Skills for Developers: In the interview, we explored essential topics, including how to work effectively with a team, improve work estimation, plan your workday when working from home, navigate difficult situations, complete tasks more efficiently, and many other valuable insights.

This Course includes

• Theory and Practice: About 3 hours of lectures with many practical examples. Lessons range from 3 to 10 minutes and are easy to follow.

• Quizzes: Test your knowledge with quizzes after key sections to ensure you remember key concepts.

• Coding Exercises: Practice your skills with coding exercises designed to reinforce core concepts and boost your confidence.

• Source Code Examples: Full access to source code for all projects and exercises, helping you follow along and practice on your own.

• Lifetime access to the course and any future updates.

• Udemy Certificate: which you will receive after completing the course.

• Support: If you have any questions, we will always be willing to answer them.

Meet your instructor!

Dmytro Vasyliev is a Senior Front-end Engineer with more than 9 years of professional experience in developing web applications. I have extensive experience with React and other frameworks, having used it in various projects to build dynamic and efficient user interfaces.

Throughout the course, Dmytro provides numerous practical examples to reinforce your understanding of React.js. He has also prepared additional materials and quizzes that break down complex topics to make React.js easier to understand. These resources are designed to ensure that you can quickly apply your new skills to real-world projects.

Do you need to be concerned?

This course comes with a 30-day money-back guarantee.

Join our course today to learn how to build your first application in React!