React Stopwatch App – Interview Favorite!.Learn how to build a stopwatch with Start/Stop,Reset buttons using React Hooks like useState & useRef. Perfect for interviews. Try it live | Full code + explanation:.🔁 Save it | 🔔 Follow for more. #javascript

RT @TechInterviewHQ: What will be the output?. let x = 10;. (function() {. console.log(x);. let x = 20;.})();.❓ Choose the correct answer….

RT @TechInterviewHQ: Top React Interview Question: Machine Coding Round😃. A common React task in interviews ➤ Build a Todo List App.Feature….

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typeof null Surprise. 🔥 A classic JS quirk!. What will this log?. console.log(typeof null);. Drop your answer. Let's #Connect for more interview questions. #JavaScript #Frontend.

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Build a Simple Todo List App with .Add ✅ .Complete ✔️ and. Delete ❌ features!. Perfect for React coding interviews & practice! . #ReactJS #Frontend #CodingChallenge.

Top React Interview Question: Machine Coding Round😃. A common React task in interviews ➤ Build a Todo List App.Features to implement:.✅ Add Todo.✅ Mark as Complete.✅ Delete Todo.Check out the simplest way to solve it step-by-step::. #Frontend

Struggling with JavaScript Interview Questions?. Top JS Interview Questions are here to help you crack your next tech round!.👉 #JavaScript #Frontend #FrontendDev.

JavaScript Quiz Time_!. What will be the output?. console.log("Start");.setTimeout(() => {. console.log("Inside setTimeout");.}, 0);.console.log("End");. Choose :. A) Start → Inside setTimeout → End.B) Start → End → Inside setTimeout.C) Inside setTimeout → Start → End.

CSS Quiz Time!. Why do we use ::before and ::after pseudo-elements in CSS?.When are they useful?. Comment your thoughts below 👇. #css #frontend.

Correct Answer: D) ReferenceError. let declarations are hoisted but not initialized. So when console.log(x) runs, x exists in the scope but is in the "temporal dead zone" — accessing it before declaration causes a ReferenceError.

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Create an n × m Grid in JavaScript .Highlight entire row & column on click.Master DOM manipulation + events in action!.A must-know real-world task!.

Famous Array Interview Question.Rotate an array by one (to the right).arr = [1, 2, 3, 4];.last = arr.pop(); // Step1: Remove last element.arr.unshift(last); // Step2: Add it to the front.console.log(arr); // [4, 1, 2, 3].Follow me for more interview tipS

What will be the output?. let x = 10;. (function() {. console.log(x);. let x = 20;.})();.❓ Choose the correct answer:.A) 10.B) 20.C) undefined.D) ReferenceError. Comment your answer 👇. #Frontend.

DSA Array Question. Count the Pairs with Maximum Difference.Given arr[], find number of pairs {arr[i], arr[j]} such that |arr[i] - arr[j]| is maximum. Trick:. Max diff = max - min. Count of max × count of min = Total pairs .Time: O(n). Follow me here for more discussions

CSS MCQ:.What does the following CSS rule do?. div + p {. color: blue;.}. A) Selects all <p> inside <div>.B) Selects the first <p> after every <div>.C) Selects all <p> before <div>.D) Selects all <p> elements on the page. 👇 Comment your answer!. #css #FrontEnd.