Lessons

The following lessons explain different programming concepts and have been published by our members. Search for a particular lesson using the filters

Private Routes with React Router: Securing Application Routes

Learn how to implement private routes in React applications to restrict access to authenticated users, create route guards, and seamlessly integrate authentication with React Router.

Learn how to optimize component rendering by memoizing callback functions with useCallback, preventing unnecessary re-renders and improving React application performance.

Learn how to create your own custom React hooks to abstract and share stateful logic between components, improving code reusability and maintainability.

Learn how to implement effective form validation in React applications, from basic client-side validation to advanced validation libraries and techniques for providing user feedback.

Understand dynamic routing in React Router: how to use route parameters, best practices for flexible navigation, and building data-driven React applications.

Use advanced React to guarantee a dynamic and interactive user experience, optimizing the performance and responsiveness of the application.

Components are React.js bread and butter. Become a master creating react components using properties, the component state and learn the most common syntaxes

Learn how to implement a robust authentication system in React applications using Context API to manage user state, credentials, and permissions across your entire application.

Learn how to use useMemo to memoize expensive computations, prevent unnecessary recalculations, and boost your React application's performance.

Explore popular form libraries like Formik, React Hook Form, and Yup for streamlining form handling in React applications, reducing boilerplate code, and simplifying validation.

Master controlled components in React forms, learn effective state management patterns, and build forms that provide real-time feedback and validation for an enhanced user experience.

Learn the essentials of React Router: what it is, how to use declarative and programmatic navigation, handle 404 pages, and create seamless navigation in React apps.

Develop a full-stack application using technologies such as React.js for the user interface, along with Python and Flask on the backend.

Discover the benefits of using React's createRoot function, introduced in React v18, as we explore its role in replacing ReactDOM.render

Discover how JavaScript can update parts of a web page in real-time without reloading the entire page. This lesson explains how dynamic HTTP requests work and how modern websites use APIs to fetch new data.

Learn how to use the useRef hook to directly access DOM elements, store persistent values across renders, and build more efficient React components.

Learn when and how to implement uncontrolled components in React forms, understand their benefits for simplicity and performance, and see how to use refs to access form values.

Learn how to handle forms in React applications, understand the key concepts of controlled and uncontrolled components, and implement basic form handling techniques.

Join the 4Geeks.com Coding Introduction Program! Master coding with hands-on tutorials, AI support, and mentoring. Discover your tech career today!

Learn how Vite works as a modern module bundler and compare it to Webpack to understand its unique advantages.

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