Best Blogs for Frontend Interview Preparation & Revision

Intermediate113

React JS · Higher Order Components(HOC)

8 Essential React Design Patterns - Practical Interview Guide

Anuj Sharma

Jul 4, 2026

Expert75

React JS · React Hooks

Top 30 Frequently Asked React Hooks Interview Questions (2026)

Anuj Sharma

Jun 27, 2026

Intermediate23

React JS · React Hooks

8 React Hooks Comparisons: Must Know for Frontend Interviews

Anuj Sharma

Jun 26, 2026

Expert210

React JS · Custom Hooks

How to create custom useInfiniteScroll Hook in React

Anuj Sharma

Jun 20, 2026

Intermediate915

React JS · Custom Hooks

20 Most Asked Custom Hooks In React for Interviews

Anuj Sharma

Jun 27, 2026

Intermediate376

React JS · Performance Optimization Techniques

Top 10 React Performance Optimization Techniques [React Interview]

Anuj Sharma

Jun 19, 2026

Intermediate932

Machine Coding · Other Machine Coding Topics

20+ Frontend Machine Coding Round Interview Questions

Anuj Sharma

Jun 9, 2026

Intermediate1051

Machine Coding · Other Machine Coding Topics

Best Cheat Sheet for Frontend Machine Coding Round Interview

Anuj Sharma

Feb 6, 2026

Beginner464

Javascript · Other JavaScript Topics

25+ Top JavaScript Interview Questions and Answers For Beginners

Anuj Sharma

Feb 6, 2026

Expert2495

Frontend System Design · Design Fundamentals

21 Most Asked Frontend System Design Interview Questions & Patterns

Anuj Sharma

Jun 4, 2026

Expert4319

Frontend System Design · Design Fundamentals

Best Frontend System Design Interview Cheat Sheet 📒

Anuj Sharma

Jun 9, 2026

Intermediate22

React JS · React Hooks

Core React Hooks Cheat Sheet - Explain All React Hooks with Examples

Anuj Sharma

Jun 27, 2026

Intermediate18

React JS · React Hooks

useMemo vs useEffect Hooks in React: Difference & Trade-Off

Anuj Sharma

Jun 24, 2026

Expert16

React JS · React Hooks

Difference between React useId Hook and generating IDs using Math.random?

Anuj Sharma

Jun 24, 2026

Intermediate12

React JS · React Hooks

Common Pitfalls of useEffect Hook: Must Know for React Devs?

Anuj Sharma

Jun 24, 2026

Expert35

React JS · React Hooks

useDeferredValue vs useTransition: Difference and Trade-Off

Anuj Sharma

Jun 20, 2026

Intermediate24

React JS · React Hooks

useRef vs createRef in React: Difference and Trade Off

Anuj Sharma

Jun 19, 2026

Intermediate27

React JS · React Hooks

useMemo vs useCallback in React: Difference and Trade Off

Anuj Sharma

Jun 19, 2026

Intermediate45

React JS · React Hooks

React.memo vs useMemo in React: Difference & Trade Off

Anuj Sharma

Jun 19, 2026

Intermediate27

React JS · React Hooks

useRef vs useState in React: Difference & Trade-off

Anuj Sharma

Jun 19, 2026

Expert53

React JS · React Hooks

useEffect vs useLayoutEffect in React: Understand the Difference & Trade-Off

Anuj Sharma

Jun 17, 2026

Intermediate36

React JS · React Hooks

useState vs useReducer in React: Understand the Difference & Trade-Off

Anuj Sharma

Jun 19, 2026

Beginner29

Javascript · Function Method Polyfills

Implement JSON Parse polyfill in JavaScript

Anuj Sharma

Jun 15, 2026

Expert30

Javascript · Function Method Polyfills

Implement JSON Stringify Polyfill in JavaScript

Anuj Sharma

Jun 15, 2026

Intermediate19

React JS · Custom Hooks

Implement Custom useKeyPress Hook in React

Anuj Sharma

Jun 11, 2026

Intermediate27

React JS · Custom Hooks

Implement Custom useMediaQuery Hook in React

Anuj Sharma

Jun 11, 2026

Beginner13

React JS · Custom Hooks

Implement custom useScrollPosition Hook in React

Anuj Sharma

Jun 11, 2026

Beginner30

React JS · Custom Hooks

Implement custom usePolling hook in React

Anuj Sharma

Jun 11, 2026

Intermediate35

React JS · Custom Hooks

Implement custom useOnlineStatus() Hook in React

Anuj Sharma

Jun 11, 2026

Intermediate39

React JS · Custom Hooks

Implement custom useClipboard() Hook in React

Anuj Sharma

Jun 11, 2026

Expert30

React JS · Custom Hooks

Implement Custom useIntersectionObserver Hook in React

Anuj Sharma

Jun 11, 2026

Intermediate159

React JS · Performance Optimization Techniques

Mastering React Rendering: How memo and useCallback Eliminate Unnecessary Re-renders

Prateek Labroo

Jun 9, 2026

Intermediate571

UI Technologies · Image Optimizations

Boost Your Site Speed with CSS Sprites: A Practical Guide

Vaibhav Kumar

Jan 28, 2026

Beginner240

Javascript · Other JavaScript Topics

How to convert RGB to HEX in JavaScript

Anuj Sharma

Jul 6, 2026

Beginner193

Javascript · Other JavaScript Topics

How to convert HEX to RGB in JavaScript

Anuj Sharma

Jul 6, 2026

Intermediate123

Javascript · Closures

Master Closures in JavaScript with 5 practical examples

Anuj Sharma

Feb 17, 2026

Intermediate61

React JS · Custom Hooks

React useCopyToClipboard Hook: Explanation & Usage

Anuj Sharma

Jun 11, 2026

Beginner71

React JS · Custom Hooks

Implement useDocumentTitle Hook in React (Interview)

Anuj Sharma

Dec 23, 2025

Intermediate54

React JS · Custom Hooks

Implement useWindowSize Hook in React (Interview)

Anuj Sharma

Feb 6, 2026

Intermediate158

React JS · React Hooks

Implement usePrevious Hook in React [Interview]

Anuj Sharma

Dec 23, 2025

Intermediate172

React JS · Custom Hooks

Implement useClickOutside() custom Hook in React [Interview]

Anuj Sharma

Dec 23, 2025

Expert222

React JS · Custom Hooks

Implement useThrottle Custom Hook In React (Interview)

Anuj Sharma

Dec 23, 2025

Expert195

React JS · Custom Hooks

Implement useDebounce Custom Hook in React (Interview)

Anuj Sharma

Dec 23, 2025

Intermediate150

Javascript · Array in JS

Flatten Nested Array in JavaScript using Recursion

Anuj Sharma

Feb 21, 2026

Intermediate114

React JS · Custom Hooks

Implement useSessionStorage() Custom Hook in React [Interview]

Anuj Sharma

Nov 15, 2025

Intermediate143

React JS · Custom Hooks

Implement useLocalStorage() Custom Hook in React [Interview]

Anuj Sharma

Feb 21, 2026

Beginner193

React JS · Custom Hooks

Implement useTheme() Custom Hook in React (Interview)

Anuj Sharma

Feb 21, 2026

Beginner158

React JS · Custom Hooks

Implement useToggle() Custom Hook in React (Interview)

Anuj Sharma

Feb 21, 2026

Intermediate106

React JS · React Hooks

React Hook Rules: Why hooks declarations are not allowed inside functions

Frontendgeek

Feb 6, 2026

beginner207

React JS · Custom Hooks

Implement useFetch() Custom Hook in React (Interview)

Anuj Sharma

Feb 21, 2026

Intermediate217

Javascript · Object in JS

Flatten nested object in JavaScript using recursion [JavaScript Interview]

Anuj Sharma

Jun 4, 2026

Intermediate125

Javascript · Currying in JS

Implement Infinite Currying Multiplication in JavaScript: mul(2)(3)(4)

Anuj Sharma

Feb 21, 2026

Intermediate234

Javascript · Currying in JS

Implement Infinite Currying Sum: JavaScript Interview Question sum(1)(2)(3)

Anuj Sharma

Feb 21, 2026

Intermediate243

Javascript · Object in JS

Shallow Copy and Deep Copy in JavaScript - Object Cloning

Anuj Sharma

Feb 21, 2026

Expert214

Javascript · Promise Method Polyfills

Polyfill for Async Await in JavaScript - Step by Step Explanation

Anuj Sharma

Feb 21, 2026

beginner237

Javascript · Array Method Polyfills

Polyfill for map, filter, and reduce in JavaScript

Anuj Sharma

Feb 21, 2026

Intermediate170

UI Technologies · JWT & OAuth2.0

How does JWT (JSON Web Token) Authentication work - Pros & Cons

Frontendgeek

Jun 15, 2026

Beginner165

Javascript · Hoisting

Hoisting in JavaScript Explained with Examples

Anuj Sharma

Feb 21, 2026

Beginner161

Javascript · Function Method Polyfills

Call, apply, and bind in JavaScript: Examples & Polyfills

Kirtesh Bansal

Feb 21, 2026

Intermediate223

Javascript · Other JavaScript Topics

Understanding popstate event in Single Page Applications (SPAs)

Vijay Sai Krishna vsuri

Feb 21, 2026

beginner94

Javascript · Promise Method Polyfills

clearInterval Polyfill in JavaScript - Detailed Explanation

Anuj Sharma

Aug 3, 2025

Intermediate202

Javascript · Promise Method Polyfills

setInterval polyfill in JavaScript - Detailed Explanation

Anuj Sharma

Jun 15, 2026

beginner129

Javascript · Promise Method Polyfills

clearTimeout polyfill in JavaScript - Detailed Explanation

Anuj Sharma

Jun 15, 2026

Intermediate272

Javascript · Promise Method Polyfills

setTimeout Polyfill in JavaScript - Detailed Explanation

Anuj Sharma

Jun 15, 2026

Intermediate262

UI Technologies · Web Vitals

Understanding Critical Rendering Path (CRP) to Improve Web Performance

Anuj Sharma

Feb 6, 2026

Intermediate159

UI Technologies · Other UI Tech Topics

Part 1: From Zero to Published — How I Built and Published My First React NPM Package

Akash Deep Chitransh

Feb 6, 2026

Intermediate468

Javascript · Hoisting

Master Hoisting in JavaScript with 5 Examples

Alok Kumar Giri

Feb 21, 2026

beginner230

Machine Coding · Stopwatch

Implementing a stopwatch using React - Frontend Machine Coding Question

Pallavi Gupta

Feb 21, 2026

beginner464

Frontend System Design · Design Fundamentals

HTTP/2 vs HTTP/1.1: What's the Key Difference?

Anuj Sharma

Nov 19, 2025

Expert704

UI Technologies · Browser

What happens when you type google.com in the browser

Anuj Sharma

Feb 5, 2026

beginner372

Javascript · Throttling & Debouncing

Understand Debouncing in JavaScript with Examples

Anuj Sharma

Jun 27, 2026

Intermediate668

Javascript · Throttling & Debouncing

What is Throttling in JavaScript - Implementation & Examples

Anuj Sharma

Jun 4, 2026

Intermediate270

UI Technologies · Local & Session Storage

Understand JavaScript Local Storage, Session Storage and Cookies

Anuj Sharma

Feb 6, 2026

beginner162

Javascript · Promise Method Polyfills

Promise.any Polyfill in JavaScript - Detailed Explanation

Frontendgeek

Sep 18, 2025

Expert225

Javascript · Promise Method Polyfills

Promise.race Polyfill in Javascript - Detailed Explanation

Anuj Sharma

Jun 15, 2026

Expert202

Javascript · Promise Method Polyfills

Promise.allSettled Polyfill in JavaScript - Step by Step Explanation

Frontendgeek

Sep 18, 2025

Expert412

Javascript · Promise Method Polyfills

Promise.all Polyfill in JavaScript - Detailed Explanation [For Interviews]

Anuj Sharma

Jun 5, 2026

Expert1622

Javascript · JS Internals

Memory Leak in JavaScript: 4 Most Common Reasons

Anuj Sharma

Jun 15, 2026

Intermediate233

Javascript · Other JavaScript Topics

Understand JavaScript Date Object with Examples (for JavaScript Interviews)

Anuj Sharma

Jun 15, 2026

Intermediate316

Javascript · Other JavaScript Topics

What is javascript:void(0) and How it Works?

Anuj Sharma

Jun 15, 2026

Beginner469

Javascript · Other JavaScript Topics

How to Format Phone Number in JavaScript (JavaScript Interview)

Anuj Sharma

Jun 15, 2026

Beginner1747

Javascript · Other JavaScript Topics

5 Different Ways to Reload Page in JavaScript (Frontend Interview)

Anuj Sharma

Dec 16, 2025

Beginner425

DSA for Frontend · String in JavaScript

4 Ways to Reverse a String in JavaScript (JavaScript Interview)

Anuj Sharma

Jun 15, 2026

Expert1224

Javascript · Promise Method Polyfills

Promise Polyfill in JavaScript - Step by Step Explanation

Anuj Sharma

Jun 15, 2026

Beginner1239

Javascript · Function Method Polyfills

Apply Polyfill in JavaScript: Step by Step Explanation (For Interview)

Anuj Sharma

Jun 15, 2026

Intermediate1281

Javascript · Function Method Polyfills

Call Polyfill in JavaScript: Step by Step Explanation (For Interviews)

Anuj Sharma

Jun 15, 2026

Beginner2012

UI Technologies · CORS

What is CORS ? Cross-Origin Resource Sharing Explained [For Interviews]

Anuj Sharma

Feb 6, 2026

Beginner1286

Javascript · Function Method Polyfills

Bind Polyfill in JavaScript: Step by Step Explanation

Ram V

Jun 15, 2026

Beginner1978

Javascript · Other JavaScript Topics

Ultimate guide to REST API calls using Fetch: Machine Coding Essential

Vivek Chavan

Jun 15, 2026

Intermediate1207

Javascript · Promises in JS

Notes to Master Promise Methods in JavaScript: all(), allSettled(), race() and any()

Anuj Sharma

Jun 15, 2026

Intermediate2289

UI Technologies · Basic Auth

Explained Web Authorization Techniques - Session & JWT

Anuj Sharma

Dec 16, 2025

Beginner2533

Javascript · Scope & "This" Keyword

5 Ultimate Rules to master this keyword in JavaScript

Anuj Sharma

Feb 21, 2026

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