𝐌𝐚𝐬𝐭𝐞𝐫𝐢𝐧𝐠 𝐑𝐞𝐚𝐜𝐭.𝐣𝐬 𝐈𝐧𝐭𝐞𝐫𝐯𝐢𝐞𝐰𝐬: 𝐅𝐫𝐨𝐦 𝐙𝐞𝐫𝐨 𝐭𝐨 𝐇𝐞𝐫𝐨

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📘 𝐌𝐚𝐬𝐭𝐞𝐫𝐢𝐧𝐠 𝐑𝐞𝐚𝐜𝐭.𝐣𝐬 𝐈𝐧𝐭𝐞𝐫𝐯𝐢𝐞𝐰𝐬: 𝐅𝐫𝐨𝐦 𝐙𝐞𝐫𝐨 𝐭𝐨 𝐇𝐞𝐫𝐨

✅ Core React Concepts

JSX, Virtual DOM, props, state, and component structure (React.js v19)

✅ Hooks Deep Dive

useState, useEffect, useReducer, useRef, useMemo, and more (React.js v19)

✅ Performance Optimization

Avoid re-renders, lazy loading, memoization, and profiling (React.js v19)

✅ Component Design & Reusability

HOCs, render props, children, and Fragments (React.js v19)

✅ Forms & Event Handling

Controlled/uncontrolled components, validation, and synthetic events (React.js v19)

✅ Styling Techniques

CSS Modules, Tailwind CSS (v4.0), clsx (v2.1), and scalable styling strategies

✅ Routing

Nested routes, useParams, useSearchParams, and route protection (React Router v7.4)

✅ *Error Handling
*
Error boundaries, debugging techniques, and graceful fallbacks (React.js v19)

✅** Global State Management**

Context API (React 19), Redux Toolkit (v2.6), Zustand (v5.0), and best practices