Скачать или смотреть React | Deep Understanding of the concepts and its ecosystem.

Topics:

Virtual DOM: Explaining how the Virtual DOM works, why it’s used, and how it improves performance can be challenging. You may need to clarify concepts like reconciliation and how React efficiently updates the actual DOM.

What is the reconciliation algorithm in React?

Component Lifecycle: Discussing the component lifecycle methods, their order of execution, and when to use them can be complex. Be prepared to explain the differences between componentDidMount, componentDidUpdate, and componentWillUnmount.

React Fiber Architecture

Higher-Order Components (HOCs): Explaining the concept of HOCs, their use cases, and how they work can be challenging. Be ready to provide examples of creating and using HOCs.

React Hooks: Discussing the fundamentals of hooks, such as useState, useEffect, and useContext, and how they replace class component features can be complex. Explain how hooks can be used to manage state and side effects in functional components.

Context API: Describing the Context API, its purpose for managing global state, and how to use it efficiently can be challenging. Be prepared to explain how context providers and consumers work.\
Server-Side Rendering (SSR) and Client-Side Rendering (CSR): Clarifying the differences between SSR and CSR, their pros and cons, and how to implement them in React can be complex.

Performance Optimization: Discussing performance optimization techniques in React, such as memoization, lazy loading, and code splitting, can be challenging due to the need to consider various factors.

Error Handling