Check if two strings are anagrams

🚨 Can you solve this in under 30 seconds? Reverse a string in JavaScript 👇 Most developers know ONE way. Top developers know MULTIPLE. 💡 Method 1 (built-in): str.split('').reverse().join('') 💡 Method 2 (loop): Reverse using iteration from end → start 🔥 What interviewers actually check: Not just the answer… But how you think. 👉 Built-in → fast & clean 👉 Loop → shows real logic 💡 Golden rule: Clarity > shortcuts If you can explain BOTH, you’re already ahead. Can you write both without help? 👇 Save this for interviews 🚀 #JavaScript #CodingInterview #Frontend #Developers #InterviewPrep

🚨 Most developers fail this “simple” question… FizzBuzz 👇 Print numbers from 1 to 100: 👉 Multiple of 3 → Fizz 👉 Multiple of 5 → Buzz 👉 Both → FizzBuzz Looks easy… but here’s the trap 👇 ⚠️ If you check 3 or 5 first you’ll NEVER reach FizzBuzz (15) 💡 Correct approach: Check 15 first → then 3 → then 5 🔥 What interviewers actually test: Not syntax… but your logic and thinking order 👉 Small mistake = wrong output 💡 Golden rule: Order of conditions matters Most developers rush this. Smart developers think before coding. Which one are you? 👇 Save this for interviews 🚀 #JavaScript #CodingInterview #Frontend #Developers #InterviewPrep

𝐈𝐟 𝐘𝐨𝐮 𝐂𝐚𝐧 𝐒𝐨𝐥𝐯𝐞 𝐓𝐡𝐞𝐬𝐞 𝐉𝐚𝐯𝐚𝐒𝐜𝐫𝐢𝐩𝐭 𝐐𝐮𝐞𝐬𝐭𝐢𝐨𝐧𝐬, 𝐘𝐨𝐮'𝐫𝐞 𝐈𝐧𝐭𝐞𝐫𝐯𝐢𝐞𝐰-𝐑𝐞𝐚𝐝𝐲 100 real interview questions across the exact topics companies test. Inside this PDF you'll find: • Scope, hoisting, and closures that confuse most candidates • The tricky parts of this that break real interviews • Event loop and async patterns explained with outputs • Prototypes, promises, coercion, and modern JS concepts • Advanced edge cases that interviewers love to ask This is not theory-heavy content. These are the kinds of questions that expose real understanding. If you're preparing for frontend roles, this will help you identify gaps quickly and strengthen fundamentals. Download it, practice a few questions daily, and revisit the ones that challenge you the most. If you find this useful: • Save it for later revision • Share it with someone preparing for interviews • Comment "JS" if you'd like more resources like this More structured resources are coming soon. #frontend #interviews #softwareengineering #coding #placements #javascript

Frontend Interview Series: The useEffect Dependency Array ⚛️ One of the most common sources of bugs in React is a misunderstood useEffect dependency array. It’s a favorite topic for interviewers to test your understanding of React's rendering lifecycle. The Breakdown: 1️⃣ No Array: useEffect(() => { ... }) Runs after every single render. If you perform a state update inside here without a condition, you’ll hit an infinite loop. ⚠️ 2️⃣ Empty Array: useEffect(() => { ... }, []) Runs only once after the initial mount. It’s the go-to choice for API calls or initializing subscriptions. ✅ 3️⃣ With Dependencies: useEffect(() => { ... }, [userId]) Runs on mount and whenever userId changes. React uses Shallow Comparison to decide if it should re-run the effect. The Interview Trap: Objects & Arrays 💡 In JavaScript, objects are compared by reference, not value. Even if the data is the same, a new object reference on every render will trigger the effect every single time! Understanding these small details is what helps in writing optimized React components. #ReactJS #JavaScript #FrontendDevelopment #WebDevelopment #InterviewPrep #CodingTips #SoftwareEngineering #LearningInPublic

🚀 50 Advanced JavaScript Output-Based Questions (PDF) If you're preparing for frontend or full-stack interviews, one thing that truly tests your understanding is 👉 output-based questions. I’ve compiled 50 advanced JavaScript output-based questions covering: ✔️ Type coercion ✔️ Closures & scope ✔️ Event loop (Promises vs setTimeout) ✔️ Hoisting & TDZ ✔️ "this" keyword behavior ✔️ Arrays & objects quirks ✔️ Edge cases interviewers LOVE These are not just questions — they reflect real interview patterns used in product-based companies. 📄 I’ve put everything into a clean, presentable PDF for easy practice. 💡 Tip: Don’t just guess the output — try to explain WHY. That’s what interviewers look for. If you find this helpful, feel free to: 👍 Like 🔁 Share 💬 Comment “ANSWERS” — I’ll share the detailed explanation PDF next! #JavaScript #FrontendDevelopment #WebDevelopment #InterviewPreparation #ReactJS #CodingInterview #SoftwareEngineering #LearnToCode

𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁 𝗜𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄 𝗖𝗿𝗮𝗰𝗸 𝗚𝘂𝗶𝗱𝗲 ⚡ Most people read JavaScript… But very few understand it deeply enough to crack interviews. This guide covers the concepts that actually matter 👇 𝗖𝗼𝗿𝗲 𝗙𝘂𝗻𝗱𝗮𝗺𝗲𝗻𝘁𝗮𝗹𝘀 • Primitive vs Non-Primitive types • var vs let vs const • Hoisting and Scope • Null vs Undefined 𝗘𝗦𝟲 𝗙𝗲𝗮𝘁𝘂𝗿𝗲𝘀 • Arrow Functions • Template Literals • Destructuring • Promises 𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻 & 𝗖𝗼𝗻𝗰𝗲𝗽𝘁𝘀 • Closures • this keyword behavior • call, apply, bind • Callback functions & callback hell 𝗔𝗱𝘃𝗮𝗻𝗰𝗲𝗱 𝗧𝗼𝗽𝗶𝗰𝘀 • Prototypes & Inheritance • Event loop concepts • Promises & async handling • Generators and iterators 𝗕𝗿𝗼𝘄𝘀𝗲𝗿 & 𝗥𝘂𝗻𝘁𝗶𝗺𝗲 • DOM vs BOM • Strict mode • NaN behavior • Dynamic typing From basics to advanced, this is the kind of depth interviewers expect. Consistency + clarity = selection. Follow Sumaiya for more tech notes, interview prep, and cheat sheets 🚀 #JavaScript #Frontend #WebDevelopment #Coding #InterviewPrep #Developers #TechCareers

❓ React Interview Question: Difference between State and Props? 💡 What are Props? Props are inputs passed from parent to child components - They are read-only (immutable) - Used to make components reusable function Greeting(props) { return <h1>Hello {props.name}</h1>; } 💡 What is State? State is data managed inside a component - It can change over time (mutable) - Used for dynamic UI updates const [count, setCount] = useState(0); 💡 Key Differences props → Passed from parent, cannot be modified state → Managed inside component, can be updated props → Used for communication between components state → Used for handling dynamic data Follow Tarun Kumar for tech content, coding tips, and interview prep 🚀 #ReactJS #ReactInterview #FrontendInterview #JavaScript #CodingInterview #InterviewPrep #WebDevelopment #Developers #TechContent

🔥 This question looks simple… but most developers get it wrong in interviews: “Explain useEffect in React” Typical answer: “It runs after render” Not wrong… but not impressive. Here’s how you can explain it better 👇 ⚡ useEffect is used to handle side effects in React: – API calls – subscriptions – timers – DOM updates But the real understanding is in the dependency array 👇 👉 No dependency array → runs after every render 👉 Empty array [] → runs only once (on mount) 👉 With dependencies [value] → runs when that value changes 💡 Bonus (this is where you stand out): useEffect can also return a cleanup function – clearing timers – removing event listeners – cancelling subscriptions 👉 Prevents memory leaks Most candidates just know syntax. Strong candidates explain: 👉 when to use it 👉 when NOT to use it 💬 What’s the most confusing part of useEffect for you? #ReactJS #FrontendDevelopment #JavaScript #CodingInterview #WebDevelopment

Top 10 React Hooks Interview Questions 1. What are the benefits of using Hooks in React? 2. What are the rules of React Hooks? 3. What is the difference between useEffect and useLayoutEffect in React? 4. What does the dependency array of useEffect affect? 5. What is the useRef hook and when should you use it? 6. What is useCallback? 7. What is the useMemo hook in React and when should it be used? 8. What is the useReducer hook in React and when should it be used? 9. What is the useId hook in React and when should it be used? 10. How to create and use Custom Hooks in React? Connect/Follow Tarun Kumar for more tech content and interview prep #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #ReactHooks #CodingInterview

I created a complete React State & Events Interview Q&A Guide — from basic to expert level. This guide covers one of the most important areas in React interviews: ✅ useState fundamentals ✅ State updates and batching ✅ Previous state patterns ✅ Controlled vs uncontrolled components ✅ Event handling in React ✅ Synthetic events ✅ Event propagation ✅ Forms and inputs ✅ Common edge cases ✅ Scenario-based interview questions ✅ Expert-level state management thinking React interviews are not only about writing components. A strong React developer should understand: ➡️ Why state updates feel asynchronous ➡️ Why stale closures happen ➡️ How React queues state updates ➡️ When state should be lifted up ➡️ How events behave differently from plain JavaScript DOM events ➡️ How to avoid unnecessary re-renders ➡️ How to handle tricky form and event edge cases I prepared this guide to help developers revise React concepts in a structured way and prepare confidently for interviews. If you are learning React or preparing for frontend interviews, this topic is worth mastering deeply. What React topic should I cover next? #ReactJS #React #JavaScript #FrontendDevelopment #WebDevelopment #InterviewPreparation #FrontendInterview #ReactDeveloper #JavaScriptDeveloper #SoftwareEngineering #CodingInterview #WebDev #LearnReact #DeveloperCommunity #TechCareers