Type Script Interview question you’ll almost definitely face. I’m starting a short series about real TypeScript challenges from interviews — and we’ll begin with one of the most popular ones: implementing Pick. You’ll often get a task like this: “Recreate the Pick utility type.” The solution is below in the screenshot 👇 At first, it looks simple. But this task checks whether you really understand the fundamentals. It shows how well you understand generics, what keyof really means, how mapped types work, and how TypeScript connects keys to value types. In short, you’re creating a new type by selecting only specific properties — safely and strictly. If you can explain this clearly in an interview, you’re already ahead of many candidates. More Type Script Interview challenges coming soon. #react #frontend #typescript #javascript #javascriptinterview #typescriptinterview #frontendinterview #codinginterview #webdevelopment #programming #softwareengineering #devcareers

✨ 25 JavaScript Interview Questions — Easy → Hard JavaScript interviews don’t just test syntax. They test how deeply you understand the language. In this post, I’ve shared 25 carefully structured JS interview questions (with answers) — starting from basics and gradually moving to advanced concepts. The goal? 👉 Build confidence step by step 👉 Strengthen fundamentals 👉 Improve problem-solving depth Whether you’re: • Preparing for interviews • Revising core concepts • Moving toward advanced JS • Or aiming for frontend roles This will sharpen your clarity and thinking. 👇 Be honest — which level feels toughest in JS interviews? Easy, Medium, or Hard? #JavaScript #FrontendDevelopment #WebDevelopment #CodingCommunity #InterviewPreparation #React #100DaysOfCode

Day 15: 5 JavaScript Interview Questions 🚀 Description: These JavaScript interview questions are designed to check your core fundamentals, not just syntax. If you clearly understand concepts like scope, comparison, and events, you can easily crack beginner to mid-level JS interviews. Try answering each question yourself before checking any reference—this builds real confidence. Questions: 1️⃣ What is the difference between var, let, and const in JavaScript? 2️⃣ What is a closure in JavaScript? 3️⃣ What is the difference between == and ===? 4️⃣ What is event bubbling in JavaScript? 5️⃣ What is the difference between undefined and null? Hashtags: #JavaScript #JSInterview #FrontendDeveloper #WebDevelopment #CodingInterview #LearnJavaScript #DeveloperTips #Day15

🚀 React Interview Prep | Debounce & Throttle (Hands-on) Recently, I solved a React mock interview question asked by Anurag Singh (ProCodrr – YouTube), focused on implementing Debounce and Throttle from scratch using React Hooks. 💡 What I implemented: Normal click handling Debounce logic using useCallback and useRef Throttle logic using useCallback and useRef Practical comparison of how each behaves on rapid clicks 🧠 Key Learnings: How closures work inside debounce/throttle Why useRef is preferred over useState for mutable values When to use debounce vs throttle in real-world applications This exercise helped me deeply understand performance optimization patterns in React — something interviewers often look for beyond theory. Huge shout-out to Anurag Singh bhai for creating such mock interviews on YouTube. They are extremely helpful for interview preparation 🙌 #ReactJS #JavaScript #FrontendDevelopment #WebPerformance #Debounce #Throttle #ReactHooks #InterviewPreparation #LearningByBuilding

😈💻Type conversion, coercion, and hidden rules make JS tricky ⚠️That’s why practicing these questions is super important for interviews 🎯Comment your answer below 👇Did you get it right? 😎Follow door2dev for more developer content 🔥#javascriptdeveloper #interviewprep #codingtips #reelsindia #programmingmemes

I could use a little advice... I have a technical interview coming up that will likely focus on vanilla JavaScript. Most of my recent work has been in Next.js, React, and TypeScript, so I’m comfortable with JavaScript overall, but I want to make sure my core fundamentals are sharp going into the interview. For those of you who work closer to the language itself, what topics or concepts would you recommend brushing up on? Anything you’ve seen come up often or that made a difference in your own interviews. Appreciate any tips or suggestions.

Master these 3 JavaScript concepts before any interview 1️⃣ Closures & scope : because JS remembers 2️⃣ Event loop : because async isn’t magic 3️⃣ this keyword : because context matters Mastering these won’t just help you clear interviews, it’ll change how you think in JavaScript. #JavaScript #JavaScriptInterview #LearnJavaScript

🚀 Day 905 of #1000DaysOfCode ✨ 25 JavaScript Interview Questions — Easy to Hard JavaScript interviews don’t just test syntax — they test how well you understand the language. In today’s post, I’ve shared 25 JavaScript interview questions with answers, carefully arranged from easy to hard. The idea is to help you build confidence step by step while strengthening both fundamentals and advanced concepts. Whether you’re preparing for interviews or revising JavaScript deeply, this post will give you solid practice and clarity. 👇 Which level do you find toughest in JS interviews — easy, medium, or hard? #Day905 #learningoftheday #1000daysofcodingchallenge #FrontendDevelopment #WebDevelopment #JavaScript #React #Next #CodingCommunity

Read this if you are preparing for a JavaScript interview If you are preparing for a JavaScript interview, learn Promises for sure. 📌 Almost 40% of async-related questions come directly from Promise concepts. Interviewers expect you to clearly explain: What a Promise is Promise states (pending, fulfilled, rejected) .then(), .catch(), .finally() Promise chaining Error handling in async flows Promises show how well you understand real-world JavaScript, not just syntax. I have attached pdf with this blog to go through promises #JavaScriptInterview #Promises #AsyncJS #FrontendInterview #BackendInterview #FullStackDeveloper #InterviewPrep

⚛️ React Interview Revision Series | Day 1 🚀 Revisiting 𝐑𝐞𝐚𝐜𝐭.𝐣𝐬 𝐟𝐮𝐧𝐝𝐚𝐦𝐞𝐧𝐭𝐚𝐥𝐬 as part of my interview preparation. 📌 Topics revised today: • What is React & why it is used • Component-based architecture • Difference between React and traditional JavaScript UI handling • Overview of Virtual DOM Focusing on clarity of concepts that are commonly discussed in React interviews. Along with React, I’m also revising: ☕ Core Java 🧠 DSA Preparing to perform better in technical interviews. Any interview tips related to this topic?😊 #ReactJS #ReactInterview #FrontendDevelopment #WebDevelopment #PlacementPreparation