React Interview Questions: Virtual DOM vs Shadow DOM

⚛️ Top 150 React Interview Questions – 100/150 🚀 📌 Topic: Optimizing Bundle Size ━━━━━━━━━━━━━━━━━━━━━━ 🔹 WHAT is it? Optimizing bundle size means reducing the amount of JavaScript sent to the browser. Smaller bundles = Faster loading = Better performance. ━━━━━━━━━━━━━━━━━━━━━━ 🔹 WHY optimize bundle size? ⚡ Faster Loading Smaller files download quicker → faster Time to Interactive 📱 Better User Experience Prevents lag on low-end devices and slow 3G/4G networks 📈 SEO Advantage Search engines rank fast websites higher ━━━━━━━━━━━━━━━━━━━━━━ 🔹 HOW do you optimize it? 1️⃣ Code Splitting (Lazy Loading) const HeavyChart = React.lazy(() => import("./HeavyChart")); Loads heavy components only when needed. 2️⃣ Tree Shaking (Import Only What You Need) import { format } from "date-fns"; // NOT: import datefns from "date-fns" Removes unused code automatically during build. 3️⃣ Analyze Dependencies Use tools like: npx webpack-bundle-analyzer Find and remove heavy or unnecessary libraries. 4️⃣ Production Build Always run: npm run build Triggers minification and optimization automatically. ━━━━━━━━━━━━━━━━━━━━━━ 🔹 WHERE should you focus most? 📦 Large Libraries Be careful with lodash, moment.js, Material UI, etc. 🎯 Landing Pages First impression speed matters most here. 🏗️ Production Deployments Never deploy without optimized build. ━━━━━━━━━━━━━━━━━━━━━━ 📝 SUMMARY (Easy to Remember) Think of packing for a trip 🧳 If you pack your entire wardrobe, your suitcase becomes heavy and slow. Optimizing bundle size means packing light — taking only the code you truly need. ━━━━━━━━━━━━━━━━━━━━━━ 👇 Comment “React” if this handbook is helping you 🔁 Share with someone preparing for React interviews #ReactJS #ReactInterview #BundleOptimization #WebPerformance #JavaScript #Top150ReactQuestions #LearningInPublic #Developers ━━━━━━━━━━━━━━━━━━━━━━

🚀 30 Advanced Frontend Interview Questions Every Developer Should Know (2026 Edition) If you're preparing for Frontend / MERN Stack interviews, these advanced-level questions can help you test your real understanding of modern web development. Whether you're a fresher, job seeker, or experienced developer, mastering these topics will make you stand out during technical interviews. Here are 30 Advanced Frontend Interview Questions 👇 1️⃣ What is the difference between Virtual DOM and Real DOM, and how does it improve performance? 2️⃣ Explain Reconciliation in React. How does the diffing algorithm work? 3️⃣ What are React Fiber and Concurrent Rendering? 4️⃣ What is Hydration in React and why is it important for SSR? 5️⃣ Difference between Server-Side Rendering (SSR), Static Site Generation (SSG), and CSR. 6️⃣ What are Higher Order Components (HOC) and when should they be used? 7️⃣ Explain React Hooks rules and why they exist. 8️⃣ What is the difference between useMemo, useCallback, and React.memo? 9️⃣ How does Code Splitting improve performance in large applications? 🔟 What are Web Workers and when should they be used? 11️⃣ Explain Event Delegation in JavaScript with a real example. 12️⃣ What is Debouncing vs Throttling and when should each be used? 13️⃣ How does JavaScript Event Loop work in the browser? 14️⃣ What is the difference between Microtasks and Macrotasks? 15️⃣ Explain Closures and their practical use in frontend applications. 16️⃣ What are Critical Rendering Path and Render Blocking Resources? 17️⃣ How can you optimize website performance for large applications? 18️⃣ What is Tree Shaking in JavaScript bundlers? 19️⃣ What is the difference between Shadow DOM and Virtual DOM? 20️⃣ What are Progressive Web Apps (PWA) and their benefits? 21️⃣ How does Lazy Loading of images/components work? 22️⃣ What is Content Security Policy (CSP) in frontend security? 23️⃣ Explain Cross-Origin Resource Sharing (CORS). 24️⃣ What is the difference between Authentication and Authorization in frontend apps? 25️⃣ What are Service Workers and how do they enable offline apps? 26️⃣ Explain state management patterns in large React apps. 27️⃣ What is the difference between Redux, Context API, and Zustand? 28️⃣ What are design patterns commonly used in frontend architecture? 29️⃣ How do you handle memory leaks in React applications? 30️⃣ What are Web Vitals (LCP, CLS, INP) and how do they impact performance? 🔥 Follow for more Frontend, MERN, and Developer Interview content. #frontenddeveloper #frontenddevelopment #mernstack #reactjs #javascript #webdevelopment #codinginterview #softwaredeveloper #developercommunity #techcareer #programming #learncoding #webdev #developerlife #softwareengineering #reactdeveloper #javascriptdeveloper #mernstackdeveloper #techjobs #fresherjobs #hiringdevelopers #jobseekers #codingquestions #interviewpreparation #csstudents #codinglife #100daysofcode

You don’t need a million-user product on your resume to clear a #React interview. If you’ve built even a small app — managed state, passed props, handled clicks, or used a couple of hooks — you already have the foundation recruiters are looking for. What really matters? Clear concepts. Clean thinking. Confident explanations. Here’s a fresh roadmap of topics interviewers love to explore 👇 🔹 Foundation Round Start strong with the core ideas: What problem does React solve? How does component-based architecture work? Difference between class components and modern functional components Understanding props vs local state JSX and why it exists How the Virtual DOM improves performance Why “key” is important while rendering lists Handling user interactions Default values for props Showing UI conditionally If you can explain these with small examples, you’re already ahead of many candidates. 🔹 Concept + Application Round This is where depth starts showing: useState and useEffect — lifecycle in functional components Controlled vs uncontrolled form elements Client-side routing using React Router Context API compared to Redux (when to use what) Prop drilling and cleaner alternatives React.memo and preventing unnecessary re-renders useMemo vs useCallback (real difference, not textbook definition) Higher-Order Components Form handling patterns in real apps Interviewers want to see: Can you build maintainable apps? 🔹 Advanced Understanding Round This is where senior-level clarity shines: Why components re-render and how to optimize Reconciliation process How the diffing algorithm works Code splitting with React.lazy and Suspense Error Boundaries Authentication flows and protected routes Render Props vs HOCs Server-Side Rendering vs Client-Side Rendering React Fiber & concurrent rendering Testing React components effectively You don’t need to memorize everything. But you should understand why React behaves the way it does. 💡 Pro Tip: Don’t just read answers. Build tiny demos. Break things. Fix them. That’s how concepts stick. Keep improving. Keep shipping projects. Your consistency will do more than any crash course ever will. 🚀 If you’re navigating your tech journey and feel stuck, you’re not alone. Ask questions. Grow publicly. Stay curious. Also, I and Ribhu Mukherjee have authored in depth 0 to DREAM placement book, from our experience with expert video resources. Check it out here: https://lnkd.in/gJtXjkBP #ReactJS #FrontendDeveloper #WebDevelopment #JavaScript #TechCareers #CodingInterview #SoftwareEngineering

🚀 React Interview Insights – My Recent Experience 🚀 I recently went through a React interview, and here are some key questions and my takeaways that might help fellow developers prepare: 1️⃣ String Manipulation Q: Given In = " hello dear how are you " → produce Op = "hello dear how are you" A: Trim whitespace using str.trim() for clean inputs. 2️⃣ Flatten a Nested Array Q: How to flatten [1, [2, [3, 4]], 5] A: Use array.flat(Infinity) or a recursive function for deep flattening. 3️⃣ React Fiber & Reconciliation Algorithm Q: Explain React Fiber A: Fiber is React’s internal engine that breaks rendering into units. Reconciliation algorithm efficiently updates the DOM by diffing virtual DOM and applying minimal changes. 4️⃣ React Context vs Redux Toolkit Q: When to use each? A: Context for lightweight state (theme, auth). Redux Toolkit for complex global state with actions, reducers, and middleware. 5️⃣ Client-Side Rendering (CSR) vs Server-Side Rendering (SSR) Q: Benefits? A: CSR → faster interactions after initial load, SSR → faster first contentful paint & better SEO. 6️⃣ Lighthouse Q: What is it? A: Chrome tool to audit performance, accessibility, SEO, and best practices for web apps. 7️⃣ Debugging Performance Issues Q: App feels slow, what do you do? A: Use React DevTools to check unnecessary re-renders Chrome Performance tab for profiling Optimize expensive computations using useMemo / React.memo Virtualize large lists (@tanstack/react-virtual) 8️⃣ Code Review – 3 Key Checks Proper component structure & readability Performance optimizations (memoization, avoiding unnecessary renders) Security & accessibility considerations 9️⃣ Code Optimization Techniques Lazy load components (React.lazy + Suspense) Debounce expensive operations Use virtualized lists Split code for faster load 🔟 Security Features in React Escape dynamic HTML (dangerouslySetInnerHTML only if necessary) Sanitize inputs to prevent XSS Proper authentication & token handling Use HTTPS & secure cookies 💡 Takeaway: Being prepared for state management, performance, SSR/CSR, security, and debugging questions is crucial for React interviews. #ReactJS #FrontendDevelopment #InterviewPrep #WebDevelopment #ReduxToolkit #PerformanceOptimization #CodeReview #SSR #CSR #TechTips

⚛️ Top 150 React Interview Questions – 128/150 📌 Topic: Hydration Concept ━━━━━━━━━━━━━━━━━━━━━━ 🔹 WHAT is it? Hydration is the process where React attaches event listeners and state logic to the static HTML that was previously rendered by the server. The page already looks complete (thanks to SSR), but it is not interactive yet. Hydration transforms that static HTML into a fully functional React application on the client side. React reuses the existing DOM instead of rebuilding it from scratch. ━━━━━━━━━━━━━━━━━━━━━━ 🔹 WHY is it important? ⚡ Faster First Paint Users see real content immediately before JavaScript finishes loading. 🔍 Better SEO Performance Search engines index fully populated HTML instead of an empty client-side shell. ♻️ Efficient Rehydration React connects to existing DOM nodes instead of recreating them, improving performance. Hydration bridges the gap between “visible content” and “interactive UI.” ━━━━━━━━━━━━━━━━━━━━━━ 🔹 HOW does it work? In React 18, you use hydrateRoot: import { hydrateRoot } from 'react-dom/client'; import App from './App'; const container = document.getElementById('root'); // Attaches listeners to existing server-rendered HTML hydrateRoot(container, <App />); What happens internally: • React compares server HTML with Virtual DOM • Attaches event listeners • Activates state • Makes components interactive ⚠️ Quick Tip The client-side render output must exactly match the server-rendered HTML. If not → You’ll get a Hydration Mismatch Warning. ━━━━━━━━━━━━━━━━━━━━━━ 🔹 WHERE is Hydration used? 🌐 Next.js / Remix Converting server-rendered pages into interactive apps. 🛒 E-commerce Show product grids instantly, hydrate cart functionality later. 📰 Content Blogs Load article content immediately, hydrate Like buttons and comments after. 📱 Progressive Web Apps Instant first paint, then full interaction. ━━━━━━━━━━━━━━━━━━━━━━ 📝 SUMMARY (Easy to Remember) Hydration is like a “Just-Add-Water” instant meal 🍜 The server sends the dried ingredients (static HTML). It looks ready but isn’t usable yet. The browser adds water (JavaScript). Now the UI becomes interactive and fully functional. Static first. Interactive next. That’s Hydration. ━━━━━━━━━━━━━━━━━━━━━━ 👇 Comment “React” if this series is helping you 🔁 Share with someone preparing for React interviews #ReactJS #Hydration #SSR #NextJS #FrontendDevelopment #Top150ReactQuestions #LearningInPublic #Developers ━━━━━━━━━━━━━━━━━━━━━━

🚀 Top 30 Frontend Developer Interview Questions (2026 Edition) If you're preparing for a frontend interview, these are the questions that test real understanding — not just syntax. --- 🔹 Core JavaScript 1️⃣ Explain the difference between "var", "let", and "const". 2️⃣ What is closure? Give a real-world use case. 3️⃣ How does the JavaScript event loop work? 4️⃣ Difference between synchronous and asynchronous code. 5️⃣ What are Promises and how do they differ from "async/await"? 6️⃣ Explain prototypal inheritance in JavaScript. 7️⃣ What is debouncing vs throttling? 8️⃣ How does "this" keyword behave in different contexts? 9️⃣ What is event delegation and why is it useful? 🔟 Difference between deep copy and shallow copy. --- 🔹 Browser & Web Fundamentals 1️⃣1️⃣ How does the browser render a webpage? (Critical Rendering Path) 1️⃣2️⃣ What is the DOM and how does it work? 1️⃣3️⃣ Difference between "localStorage", "sessionStorage", and cookies. 1️⃣4️⃣ What causes layout shift and how can you prevent it? 1️⃣5️⃣ Explain CORS and how frontend handles it. 1️⃣6️⃣ What are Web Workers and when should you use them? --- 🔹 HTML & CSS 1️⃣7️⃣ What is semantic HTML and why is it important? 1️⃣8️⃣ Difference between Flexbox and Grid — when to use each? 1️⃣9️⃣ What is CSS specificity and how is it calculated? 2️⃣0️⃣ How do you make a responsive design without frameworks? 2️⃣1️⃣ Explain "position: relative", "absolute", "fixed", and "sticky". 2️⃣2️⃣ What are pseudo-elements vs pseudo-classes? --- 🔹 Framework Knowledge (React / Angular / Vue Concepts) 2️⃣3️⃣ What problem do modern frameworks solve compared to vanilla JS? 2️⃣4️⃣ Explain component-based architecture. 2️⃣5️⃣ What is state management and why is it needed? 2️⃣6️⃣ Difference between controlled and uncontrolled data flow. 2️⃣7️⃣ How does virtual DOM (or change detection) improve performance? --- 🔹 Performance & Optimization 2️⃣8️⃣ How do you optimize frontend performance for large applications? 2️⃣9️⃣ What is lazy loading and code splitting? 3️⃣0️⃣ How do you debug a slow UI in production? --- 💡 These questions are designed to evaluate problem-solving, architecture thinking, and real-world experience — the skills that actually matter in production environments. #FrontendDevelopment #JavaScript #WebPerformance #CodingInterview #UIEngineering #Developers #TechCareers

Questions I Was Asked in Frontend Developer Interviews (React & JavaScript) Over the past one month, I attended 10+ interviews for Frontend Developer (0–2 years experience) roles. Here are some commonly asked interview questions that I encountered. If you're preparing for Frontend / React Developer interviews, you might want to save this post for later. #JavaScript • Explain var, let, and const. • What is Hoisting? • What is the Temporal Dead Zone (TDZ)? • What is a Closure? • What is Currying? • JavaScript is single-threaded, so how does it handle asynchronous tasks? • What is the Event Loop and how does it work? • What are Microtasks and Macrotasks? • How do Promises work in JavaScript? • Difference between fetch and axios? • Why do we use .then()? • What is Callback Hell? • What is an Event Listener? • What is Event Bubbling? • What is Event Delegation? • Difference between == and === • Difference between null and undefined • What is Optional Chaining? • What is Destructuring? • What is the Spread Operator? --- #React • What is React Virtual DOM? • What is Reconciliation? • What is a Single Page Application (SPA)? • What is the difference between Props and State? • What is Lifting State Up? • What is the key prop in React, and why is it important? • What are React Hooks? Explain the commonly used hooks. • How can we optimize performance in React? • How can we prevent unnecessary re-renders? • What is React.memo? • Difference between useMemo and useCallback? • What is the dependency array in useEffect? • What happens if useEffect has no dependency array? • What are Controlled vs Uncontrolled Components? • What is Redux? • Redux vs Context API? • Why use Redux if Context API can manage state? • Difference between Local State, Shared State, and Global State? • Difference between CSR and SSR • Why is SEO better in SSR compared to CSR? • What is Hydration in React? Hope this helps someone in their interview preparation! Feel free to add more questions you’ve encountered in interviews in the comments. #React #JavaScript #FrontendDeveloper #InterviewPreparation

Commonly asked React.js Low-Level Design (LLD) interview questions that come up in frontend interviews: 𝟭. 𝗛𝗼𝘄 𝘄𝗼𝘂𝗹𝗱 𝘆𝗼𝘂 𝗶𝗺𝗽𝗹𝗲𝗺𝗲𝗻𝘁 𝗶𝗻𝗳𝗶𝗻𝗶𝘁𝗲 𝘀𝗰𝗿𝗼𝗹𝗹𝗶𝗻𝗴 𝗶𝗻 𝗥𝗲𝗮𝗰𝘁? - Think about how you would detect when the user reaches near the bottom of the page and trigger additional data loading. Also consider techniques like throttling or debouncing to avoid excessive API calls. 𝟮. 𝗛𝗼𝘄 𝘄𝗼𝘂𝗹𝗱 𝘆𝗼𝘂 𝗯𝘂𝗶𝗹𝗱 𝗮 𝘀𝗲𝗮𝗿𝗰𝗵 𝗳𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝗮𝗹𝗶𝘁𝘆 𝘄𝗶𝘁𝗵 𝗹𝗶𝘃𝗲 𝗳𝗶𝗹𝘁𝗲𝗿𝗶𝗻𝗴 𝗶𝗻 𝗮 𝗥𝗲𝗮𝗰𝘁 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻? - Discuss how you would optimise filtering for large datasets, debounce user input, and manage filtered results when interacting with an API. 𝟯. 𝗛𝗼𝘄 𝘄𝗼𝘂𝗹𝗱 𝘆𝗼𝘂 𝗱𝗲𝘀𝗶𝗴𝗻 𝗮 𝗳𝗼𝗿𝗺 𝘄𝗶𝘁𝗵 𝗱𝘆𝗻𝗮𝗺𝗶𝗰 𝗳𝗶𝗲𝗹𝗱𝘀 𝗶𝗻 𝗥𝗲𝗮𝗰𝘁? - Consider how you would structure state for adding and removing fields, handle validation and errors, and decide between controlled vs uncontrolled components. 𝟰. 𝗛𝗼𝘄 𝘄𝗼𝘂𝗹𝗱 𝘆𝗼𝘂 𝗺𝗮𝗻𝗮𝗴𝗲 𝘀𝘁𝗮𝘁𝗲 𝗳𝗼𝗿 𝗮 𝗺𝘂𝗹𝘁𝗶-𝘀𝘁𝗲𝗽 𝗳𝗼𝗿𝗺 𝗶𝗻 𝗥𝗲𝗮𝗰𝘁? - Think about how data from each step is stored, how it can be accessed across steps, and how navigation and validation should be handled. 𝟱. 𝗛𝗼𝘄 𝘄𝗼𝘂𝗹𝗱 𝘆𝗼𝘂 𝗶𝗺𝗽𝗹𝗲𝗺𝗲𝗻𝘁 𝗮 𝗰𝘂𝘀𝘁𝗼𝗺 𝘂𝘀𝗲𝗙𝗲𝘁𝗰𝗵 𝗵𝗼𝗼𝗸 𝗳𝗼𝗿 𝗵𝗮𝗻𝗱𝗹𝗶𝗻𝗴 𝗛𝗧𝗧𝗣 𝗿𝗲𝗾𝘂𝗲𝘀𝘁𝘀? - A good design should manage loading, success, and error states while remaining reusable across multiple components. 𝟲. 𝗛𝗼𝘄 𝘄𝗼𝘂𝗹𝗱 𝘆𝗼𝘂 𝗶𝗺𝗽𝗹𝗲𝗺𝗲𝗻𝘁 𝗹𝗮𝘇𝘆 𝗹𝗼𝗮𝗱𝗶𝗻𝗴 𝗼𝗳 𝗰𝗼𝗺𝗽𝗼𝗻𝗲𝗻𝘁𝘀 𝗶𝗻 𝗥𝗲𝗮𝗰𝘁? - Explain how tools like React.lazy and Suspense can help load components only when they are needed, especially in route-based applications. 𝟳. 𝗛𝗼𝘄 𝘄𝗼𝘂𝗹𝗱 𝘆𝗼𝘂 𝗶𝗺𝗽𝗹𝗲𝗺𝗲𝗻𝘁 𝗮 𝗱𝗿𝗮𝗴𝗴𝗮𝗯𝗹𝗲 𝗹𝗶𝘀𝘁 𝗶𝗻 𝗥𝗲𝗮𝗰𝘁? - This involves managing drag state, updating item order, and ensuring the implementation remains performant. 𝟴. 𝗛𝗼𝘄 𝘄𝗼𝘂𝗹𝗱 𝘆𝗼𝘂 𝗱𝗲𝘀𝗶𝗴𝗻 𝗮𝘂𝘁𝗵𝗲𝗻𝘁𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗮𝗻𝗱 𝗮𝘂𝘁𝗵𝗼𝗿𝗶𝘇𝗮𝘁𝗶𝗼𝗻 𝗶𝗻 𝗮 𝗥𝗲𝗮𝗰𝘁 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻? - Consider protected routes, redirecting unauthenticated users, token-based authentication (such as JWT), and handling token expiration. These questions are great for evaluating a candidate’s understanding of state management, performance optimization, component design, and real-world frontend architecture. Which other React LLD questions do you think interviewers should ask? Share in the comments! Like. Repost. Save for later. -- Advanced frontend interview preparation resources: https://lnkd.in/dTPdEYwz

⚛️ Top 150 React Interview Questions – 122/150 📌 Topic: Snapshot Testing ━━━━━━━━━━━━━━━━━━━━━━ 🔹 WHAT is it? Snapshot Testing saves the rendered output (HTML structure) of a component into a file. When the test runs again, React compares: 👉 Current Render vs 👉 Saved Snapshot If anything changes, the test fails. It’s basically a UI comparison test. ━━━━━━━━━━━━━━━━━━━━━━ 🔹 WHY use it? 🛑 Detect Regressions Catches accidental UI changes instantly. ⚡ Minimal Code No need to manually check every div, class, and prop. 🧱 Protect Complex UI Useful when components have deeply nested HTML structures. 📦 Refactor Safely If the snapshot changes unexpectedly, you’ll know immediately. ━━━━━━━━━━━━━━━━━━━━━━ 🔹 HOW to do it? ✅ Basic Snapshot Example import { render } from '@testing-library/react'; import MyButton from './MyButton'; test('should match the previous snapshot', () => { const { asFragment } = render( <MyButton label="Submit" color="blue" /> ); // Creates or compares with .snap file expect(asFragment()).toMatchSnapshot(); }); 👉 The first time you run it, a .snap file is created. 👉 Next time, it compares against that file. 🔄 Updating Snapshot (When UI change is intentional) npm test -- -u This updates the stored snapshot. ⚠️ Only update if the UI change is expected. ━━━━━━━━━━━━━━━━━━━━━━ 🔹 WHERE to use it? 🧩 Stable UI Components Buttons, Alerts, Cards, Loaders. 🌳 Large Data Rendering When mapping JSON → Complex HTML. 📐 Design Systems Reusable components that must not change accidentally. 🚫 Avoid For Highly dynamic content that changes frequently — Snapshots can become noisy and hard to manage. ━━━━━━━━━━━━━━━━━━━━━━ 📝 SUMMARY (Easy to Remember) Think of a Before & After Photo 📸 Before renovating a house (refactoring code), you take a Before photo (Snapshot). After renovation, you compare the house with the photo. If something changed unexpectedly — you immediately spot it. Snapshots protect your UI from silent visual breakage. ━━━━━━━━━━━━━━━━━━━━━━ 👇 Comment “React” if this series is helping you 🔁 Share with someone preparing for React interviews #ReactJS #Testing #SnapshotTesting #Jest #FrontendDevelopment #Top150ReactQuestions #LearningInPublic #Developers ━━━━━━━━━━━━━━━━━━━━━━

🚀 Frontend Interview Experience (4.5 Years Exp) Recently appeared for a Frontend Developer interview, and these were some interesting questions asked during the discussion. I thought I’d share them with the community, which can help others who are preparing. 👇 1️⃣ JavaScript Method Chaining - Implement an object so it works like this: calculate.add(2).mul(4).subs(1).value 2️⃣ CSS Concept - What is the difference between rem and em units? 3️⃣ React Question - Create a custom hook to build a simple counter app. 4️⃣ React Component Communication - Create two components where: The parent passes a function as a prop, and the child calls that function Two buttons: Button 1 → Increase the child state value Button 2 → Show the current child state value when parent component's button clicked These questions tested JavaScript fundamentals, CSS understanding, and React component communication patterns. 💡 If you’re preparing for Frontend / React interviews, try implementing these without looking up the solution first. Happy learning! 🚀 #javascript #reactjs #frontenddeveloper #webdevelopment #interviewexperience #codinginterview #reacthooks #InterviewPrep