At the Beginner level, you should have a solid understanding of core React concepts, setting the groundwork for component-based development, simple state management, and event handling. Our Beginner-level projects test your ability to do the following:

• Set up a new React project using Vite or create-react-app
• Create functional components and utilize JSX syntax
• Style components using inline styles, CSS files, or basic CSS modules
• Pass data between components using props
• Manage component-specific data using the useState hook
• Handle basic user events, like button clicks and form submissions

These projects are aimed at users with a deeper understanding of React’s core functionality and patterns for building more complex applications. You should also understand the basics of server-state management and accessibility principles.

• Structure a project using component-based architecture
• Use useEffect to handle side effects, such as fetching data or updating the DOM
• Implement routing with React Router for navigating between views
• Manage global state with Context API for data shared across multiple components
• Handle form inputs and manage form state effectively
• Create reusable components with props, state, and composition patterns
• Handle server-state fetching with tools like React Query or SWR, managing loading, success, and error states
• Use prop-types or TypeScript to ensure type safety in component props
• Apply foundational accessibility principles, such as semantic HTML and keyboard navigation

To tackle these projects, you should be comfortable building more robust and maintainable applications, integrating external data, and optimizing performance. Our projects at this level start to emphasize testing, TypeScript, and state management best practices.

• Integrate data fetching from APIs and handle loading, success, and error states with React Query for server-side state management
• Manage complex component state and side effects with useReducer and useEffect
• Optimize component performance using React.memo, useMemo, and useCallback
• Use advanced React Router features, including nested routes, route protection, and redirects
• Test components using React Testing Library and Jest for unit and integration testing, focusing on behavior over implementation details
• Manage global state in medium-sized applications using tools like Redux, Zustand, or a combination of Context and custom hooks
• Implement custom hooks to encapsulate reusable logic across components
• Adopt TypeScript to enforce type safety and improve code quality, at least partially

To solve these advanced React projects, you'll need to demonstrate a solid grasp of everything in the above sections, as well as performance optimization, scalable architecture, and professional React patterns used in production-level applications. Our Advanced projects emphasize modern practices like server-side rendering, Next.js, and full TypeScript integration.

• Implement server-side rendering (SSR) and static generation using Next.js to improve SEO and performance
• Leverage React Server Components and understand their applications in server-rendered environments
• Manage complex global state using advanced Redux patterns or libraries like React Query or Apollo Client for asynchronous data and cache management
• Optimize application performance with code splitting, lazy loading, and dynamic imports
• Build accessible components that adhere to WAI-ARIA guidelines, including keyboard navigation and focus management for inclusivity
• Implement TypeScript throughout the entire project, achieving strong typing across components, hooks, and API responses
• Use CI/CD pipelines for automated testing, building, and deploying, especially with serverless platforms like Vercel or Netlify
• Handle advanced testing scenarios, including mocking API calls and writing end-to-end (E2E) tests with tools like Cypress
• Organize files and components following best practices for scalable file structure, modularization, and separation of concerns