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React Crash Course: From Zero to Hero

Name: React Crash Course: From Zero to Hero
Rating: 4.4 (2171 reviews)

React JS for Beginners: Build 4 React Projects, Learn React Components, JSX, State, React Hooks, Forms, API, Next.js

Role Play

Created byDmytro Vasyliev, Anton Voroniuk Support, Dmytro Vasyliev Support, Anton Voroniuk

Last updated 5/2026

English

What you'll learn

Build a Products List App – Learn React core (JSX, Components, Props, State, Hooks), project structure, component organization, styling approaches.
Build a Todo List App – Learn Forms with React-Hook-Form & Yup, validation, error handling, API calls with fetch/Axios, CRUD operations.
Learn how to fix React mistakes — Missing Keys, State Mutation, Early State Reads, Wrong Dependencies, Infinite Loops, Broken Inputs.
Build an AI Chatbot App – Learn how to Integrate ChatGPT, Gemini, DeepSeek, Claude & Grok APIs for real-time conversations.
Build a Contacts List App – Learn Next.js basics: setup, Pages & Layouts, Navigation, Dynamic Routes, data fetching (Server/Client), Suspense, debugging.
Set up GitHub Copilot, Cursor and Windsurf, explore powerful features like Code Completions, Chat Context, Agent Mode, and more.
Learn about Effective team collaboration, task estimation, productivity, problem solving, code review, developers salaries.
And much more to enhance your skills as a React.js developer.

Coding Exercises

This course includes our updated coding exercises so you can practice your skills as you learn.

Course content

68 sections • 406 lectures • 40h 27m total length

Welcome to the Course2:18
This lesson is an introduction to the course.
Course Requirements0:50
In this lesson, you will learn what the course requirements are.
How to Study on Udemy2:27
In this lesson, you are going to learn how to download the code sources for the application and lessons.
How to Use Code Examples from Github4:29
In this lesson, you will explore how to study on the platform.
GitHub Source Code Examples0:31
Below you will find links to the source code on GitHub. Each GitHub page includes clear instructions on how to view or download the code for that lesson.

Introduction0:55
This lesson is an introduction to the section.
What is React7:47
In this lesson, you will learn what is React and some of its key-features such as JSX, Virtual DOM, One-Way Data Flow and Component-Based Architecture.
Master React Fundamentals with Maya (your AI Mentor)
Environment Setup3:43
In this lesson, you will start setting up your development environment, everything you need to have to create React application.
Creating React Application4:15
In this lesson, you will learn how to quickly create a React application that is ready to run out of the box.
Application Structure5:42
In this lesson, you will learn about files and folders in your React application.
See Example of Application Structure1:14
Cleaning Up Application2:02
In this lesson, you will clean up a bit our React application from not necessary code.
Developer Tools6:35
In this lesson, you will learn what is browser Developer Tools and how to use it.
Do a Quick Knowledge Check

Introduction: Creating React Components0:38
This lesson is an introduction to the section.
Your First React Component2:45
In this lesson, you will learn how to create a React component and its naming conventions.
Importing and Exporting Components2:51
In this lesson, you will learn how to import and export components to keep them in separate files.
See Example of Importing and Exporting Components0:45
Practice Importing and Exporting Components
Writing Markup with JSX5:31
In this lesson, you'll learn about the features of the JSX syntax and how to use it to display information.
Using Variables in JSX7:04
In this lesson, you will learn how to use variables and JavaScript objects inside JSX.
Practice Markup and Variables in JSX
Do a Quick Knowledge Check

Introduction: Adding Interactivity0:46
This lesson is an introduction to the section.
Passing Props to a Component5:32
In this lesson, you will learn how to share data between components using props.
Component Props Manipulations5:40
In this lesson, you will learn how to manipulate props inside a component.
Practice Passing Props & Manipulations
Responding to Events8:04
In this lesson, you will learn how to respond to events and how to pass them as prop to children components.
Rendering List10:11
In this lesson, you will learn how to use the JavaScript array methods to manipulate an array of data in JSX.
Fragment Component5:01
In this lesson, you will learn what is Fragment components and why they needed.
Practice Rendering List & Fragments
Conditional Rendering6:33
In this lesson, you will learn how to dynamically show or hide different elements in your markup based on different conditions.
Practice Events & Conditional Rendering
Do a Quick Knowledge Check

Introduction: Styling in React0:42
This lesson is an introduction to the section.
Using Inline Styles7:30
In this lesson you will learn more about inline styles in JSX markup, their pros and cons.
Practice Inline Styles
Using CSS Files4:58
In this lesson you will learn more about CSS files, how to use it in components, their pros and cons.
Practice CSS Files
Using CSS Modules4:20
In this lesson you will learn more about CSS modules, how to use it in components, their pros and cons.
Using Global CSS Styles2:36
In this lesson you will learn more about global CSS styles, their pros and cons.
Alternative Styling Options4:48
In this lesson, I will give you a quick overview of other styling options such as the SASS preprocessor, Styled Components, and Tailwind CSS.
Do a Quick Knowledge Check

Introduction: Managing State0:38
This lesson is an introduction to the section.
Component life-cycle and state3:11
In this lesson you will learn what is component life-cycle and component state.
Component state vs local variables3:15
In this lesson you will learn the difference between component state variables and local variables and when to use them.
Using useState hook4:59
In this lesson is about one of the most popular React hook - useState.
Practice useState hook
Batch updating of useState5:57
In this lesson you will learn how to perform multiple state updates in one event.
Practice Batch updating of useState
Do a Quick Knowledge Check

Introduction: Managing Complex State0:32
This lesson is an introduction to the section.
Updating Objects in State11:48
In this lesson you will learn how to correctly update objects and nested objects in component state.
Practice Updating Objects in State
Adding/Deleting items in Array State8:38
In this lesson you will learn how to correctly add and delete items from array state.
Practice Adding/Deleting items in Array State
Updating items in Array State6:44
In this lesson you will learn how to correctly update items in array state.
Practice Updating items in Array State
See Example of Managing Complex State1:08
Do a Quick Knowledge Check

Setting Up New Application via Vite3:08
You will learn all the essentials about setting up new applications via Vite.
Create Application Layout for To-Do List4:39
You will create the main structure of your To-Do application, organizing components and setting up a clean layout.
Creating a Form to Add New To-Do’s4:00
In this section, you will build a form to add new tasks, including input fields and a submit button.
Structuring and Styling Form Fields2:39
You will learn how to structure form fields properly and apply basic styling for a clean user experience.
Handling Form Submission with onSubmit5:38
This lesson covers handling form submission events and capturing user input efficiently.
Storing Form Data in the State4:42
You will learn how to manage form data using React state to store new to-do items dynamically.

Expanding/Collapsing Additional Form Fields5:42
You will implement functionality to expand or collapse additional form fields based on user interactions.
Creating and Displaying To-Do List6:41
In this section, you will display a list of to-do items dynamically by mapping over an array of tasks.
Structuring and Styling To-Do List5:07
You will structure the list of tasks and style it for better readability and usability.
Move Static Data about Priorities into Variables6:14
This lesson focuses on organizing static priority data into variables for better reusability.
Updating To-Do Status with Controlled Components7:12
You will learn how to update the status of to-do items using controlled components in React.

Preparing Components for Editing functionality5:06
You will refactor components to support editing functionality while keeping the code organized.
Displaying an Edit Form for To-Do’s9:35
This lesson covers rendering an editable form for modifying existing tasks.
Allowing User to Edit Items in a List3:15
You will enable users to edit their tasks directly in the to-do list.
Adding Delete Functionality to Remove Items4:18
You will implement a delete feature to allow users to remove tasks from the list.
Display Filtering Options for To-Do List7:35
In this lesson, you will add filter options so users can view tasks based on specific criteria.
Move Static Data about Filters into Variables3:46
You will store filter options as variables to make them reusable across the application.
Allowing User to Filter Items in List7:07
You will implement filtering logic to display only the relevant to-do items.

Requirements

NO React knowledge or experience required
Basic knowledge of JavaScript (we provide reading materials for those who are not familiar with JavaScript)
Basic knowledge of HTML/CSS

Description

React is a Top JavaScript library for building interactive web applications, because of its fast performance, scalability and ease of use.

I 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?

REACT: Learn how to build React Applications with Components, Props, State, Forms, Validation, and APIs using Fetch, Axios, Hooks, and Yup.
REACT MISTAKES: Learn how to fix React Beginner Mistakes — Missing Keys, Mutating State, Reading State Right After Update, Wrong useEffect Dependencies, Infinite Loops, and Broken Controlled Inputs.
AI CHATBOT: Learn how to build an AI Chatbot with React, integrate Google AI, OpenAI, DeepSeek, Claude, and xAI APIs, and enhance Chat UI with Streaming, Themes, and Multi-Chat Features.
NEXT JS: Learn how to build Next.js Applications with Pages, Layouts, Dynamic Segments, Search Params, and fetch Data using Server and Client Components.
PROMPTS: Learn how to apply Prompt Engineering, fix Mistakes, use Best Practices, and write Role-Based Prompts with Advanced Techniques.
CHAT GPT: Learn how to use ChatGPT for Coding, Research, and Projects, customize with Custom Instructions, manage Memory, explore Models, etc.
GITHUB COPILOT: Learn how to use GitHub Copilot in VS Code, explore Code Completions, Chat Modes, Custom Instructions, and Prompt Files for smarter AI Coding.
CURSOR: Learn how to use Cursor AI with Tab Completions, Chat Modes, Plan Mode, Rules, and Memories for faster AI Coding.
WINDSURF: Learn how to use Windsurf Editor with Supercomplete, Cascade Chat Modes, Plan Mode, DeepWiki, Rules, and Memories for efficient AI Development.
SOFT SKILLS: Learn how to improve Soft Skills for Developers, boost Remote Productivity, collaborate in Teams, estimate Tasks, and grow faster with Mentors.

This Course includes

Theory and Practice: 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).
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!

Who this course is for:

Students who are new to React and want to learn it from scratch
JavaScript developers who have basic knowledge and want to dive deeper into React
Developers familiar with other frameworks (like Angular or Vue) who are looking to switch to React
Non-technical professionals who want to make the transition to programming and get started with React

React Crash Course: From Zero to Hero

What you'll learn

Explore related topics

Coding Exercises

Course content

Introduction5 lectures • 11min

REACT: Getting Started9 lectures • 32min

REACT: Creating Component6 lectures • 20min

REACT: Adding Interactivity7 lectures • 42min

REACT: Styling in React6 lectures • 25min

REACT: Managing State5 lectures • 18min

REACT: Managing Complex State5 lectures • 29min

REACT: Working with Form Controls6 lectures • 25min

REACT: Displaying To-Do List5 lectures • 31min

REACT: Advancing To-Do List Functionality7 lectures • 41min

Requirements

Description

Who this course is for: