React Crash Course: From Zero to Hero

React is a Top JavaScript library for building interactive web applications, because of its fast performance, scalability and ease of use.Course updatesMarch 2025. Added “AI CHATBOT” module. Build a real-time AI Chatbot with React.js, ChatGPT, Gemini AI & DeepSeek (2.5 hours).February 2025. Added “TO-DO LIST” module. Build a functional To-Do List using Forms, Data Validation & API Integration (4 hours).December 2024. Added “Bonus” module. Learn about effective team collaboration, task estimation, productivity, problem solving, code review, developers salaries (1 hour).About this courseI will teach you React from the very beginning by building a real web project on practice.This is a crash practical course made with Love. It won’t take too much of your time.To make learning easier for you, I will explain React concept in the simplest way possible.What’s in this course?1) BASIC Module (3 hours)Learn the Core Skills of React. Work through Practical ExamplesUnderstand React key concepts: JSX, DOM, Virtual DOM, Component-Based Architecture.Set up development environment (Browser, VS Code Editor, Node.js, npm).Debug React applications using Developer Tools.Create Components and write JSX markup. Import & Export Components.Share Data between Components via Props and Events. Conditional rendering.Styling components via Inline Styles, CSS Files and CSS Modules. Alternative Approaches.Understand Component Life-Cycle. Props vs State vs Variables.2) TO-DO LIST Module (4 hours)Build a functional To-Do List using Forms, Data Validation & API IntegrationSet up React application via Vite.Handle Form Submission, store Form Data in the Component State.Render Lists in React. Controlled and Uncontrolled Components.Implement Filtering, Editing and Deleting List Items. Handle Input Fields Changes.Form Data Validation, Errors Handling via react-hook-form and yup libraries.API interaction via fetch and axios library. HTTP methods (GET, POST, PUT, DELETE).Organizing of API calls. Handle API error mesages. Add Loading Spinner.Create and using of React Custom Hooks. Using useEffect hook.3) AI CHATBOT Module (2.5 hours)Build a real-time AI Chatbot with React.js, ChatGPT, Gemini AI & DeepSeekGenerative AI and Pricing Models for popular AI API’s.Create and style Chatbot Layout. Handle Chat Interactions via Component State.Overview of ChatGPT, Gemini and DeepSeek AI Models.Getting API keys for AI API’s and Connect AI Models the for Chatting.Implement Streaming Messages. Handle and Debug API’s Errors.Add support of Dark Mode, Markdown, Messages Auto-Scrolling and Auto-Resizable Inputs.4) BONUS Module ( 1 hour)Learn about effective team collaboration, task estimation, productivity, problem solving, code review, developers salaries and much more. Improve your development of Soft-Skills.Who is this course for?Students who are new to React.js.JavaScript developers who have basic knowledge.Developers familiar with other frameworks (like Angular or Vue).Non-technical professionals who wan get started with React.js.This Course includesTheory and Practice: About 10.5 hours of lectures with many practical examples (3-10 min lessons duration).Quizzes: Test your knowledge with quizzes after key sections (ensure you remember key concepts).Coding Exercises: Practice your skills with coding exercises (reinforce core concepts and boost your confidence).Source Code Examples: Full access to source code for all projects and exercises (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 – Senior Front-end Engineer with more than 10 years of professional experience in developing complex Web Applications. I have extensive experience with React and other frameworks, having used it in various projects to build dynamic and efficient user interfaces.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!