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How to create a flat version of a deeply nested array? [Programming Interview Question]

All Levels
javascript logo
22,174

How to build a custom timer hook in React.js? | useTimer | JavaScript Interview Question

All Levels
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19,702

Build A Mini Clone Of Google Calendar | Frontend Coding Challenge | JavaScript Interview Questions | DevKode DOM Challenge

All Levels
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14,226

Implement Debounce Function | Flipkart UI - JavaScript Interview Questions

All Levels
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11,603

Implement Accordion Component in React.js | JavaScript Interview Question

Intermediate
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11,967

How to implement Event Emitter in JavaScript? | Facebook Interview Question

Intermediate
javascript logo
14,159

How to implement DOM like structure tree!? | Frontend Interview Question | Advanced JavaScript

Advanced
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9,038

How to create OTP Input Component? | Frontend Coding Challege | JavaScript | HTML | CSS | React.js

Intermediate
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8,931

How to build a File Explorer? Atlassian Frontend Machine Coding Round Question | JavaScript Interview Question | React.js

Intermediate
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20,667

Build Country Capital Game | Microsoft Frontend Interview Question | JavaScript | React.js

All Levels
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html logo
13,488

Promise Scheduler

Advanced
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297

Progress Bar with Controls

Beginner
react logo
html logo
236

Flipping Card Component

Beginner
react logo
html logo
364

ComposeAsync

Intermediate
javascript logo
462

Phone Home Screen

Intermediate
react logo
732

Domain Operation Simulator

Beginner
javascript logo
879

Implement listenTo function

Beginner
javascript logo
912

Company Structure Validator

Intermediate
javascript logo
1,173

Compare Semantic Versions

Beginner
javascript logo
852

Build Boggle Dictionary

Advanced
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1,217

Shopping Cart Checkout

Beginner
react logo
1,260

Implement a Timeout-Based API Wrapper with Optional Retry

Intermediate
javascript logo
2,201

Measure Function Execution Time

Intermediate
javascript logo
1,458

useObjectState

Intermediate
react logo
1,274

Cinema Hall Layout Structure

Intermediate
react logo
html logo
3,111

Breadcrumb Chain Problem

Beginner
javascript logo
2,808

Build an API Client

Intermediate
javascript logo
2,654

Function Call Counter

All Levels
javascript logo
2,254

Straws on the Board

Advanced
html logo
react logo
3,413

Chess Path Finder Visualiser

Intermediate
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html logo
2,604

Count Total Comments

Beginner
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3,304

String Compression and Decompression

All Levels
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3,637

Dynamic Table Generator

Beginner
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3,897

What would be the return value (if any)?

Beginner
javascript logo
3,258

Implement Event-Driven Key-Value Store

Intermediate
javascript logo
2,287

Implement Promisify Polyfill

Intermediate
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2,416

Build a Multi Step Form

Intermediate
react logo
html logo
3,037

How to create a Drag and Drop List Component?

Intermediate
react logo
html logo
3,468

How to create analytics SDK in JavaScript?

Intermediate
javascript logo
6,345

Build a Two-Player Line Board Game

Intermediate
react logo
html logo
1,537
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Top JavaScript Array Interview Questions | Problem Solving | Array Polyfills
Frontend Coding Challenges | JavaScript | ReactJS | DevKode DOM Challenge
Top JavaScript Multiple Choice Questions (MCQ) with Answers | Frontend Interview Questions | Beginner Friendly
Advanced JavaScript Interview Questions | Problem Solving | Frontend Interview Questions
Top JavaScript Promises Interview Questions | Problem Solving | Promise Polyfills

Video Tutorials

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Frontend Debugging Techniques That Every Engineer Must Know | Understanding Git Bisect | Part 2
Frontend Debugging Techniques That Every Engineer Must Know | Part 1
JavaScript Promises Fundamentals Every Engineer Should Know | Part 1
JavaScript Promises Fundamentals Every Engineer Should Know | Part 2
What Every React Developer Should Know!? | Part 1 | Stale Closures

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