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

All Levels
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23,485

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

All Levels
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20,750

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

All Levels
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14,978

Implement Debounce Function | Flipkart UI - JavaScript Interview Questions

All Levels
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12,433

Implement Accordion Component in React.js | JavaScript Interview Question

Intermediate
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12,579

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

Intermediate
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15,013

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

Advanced
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9,590

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

Intermediate
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9,405

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

Intermediate
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21,480

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

All Levels
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14,235

How to implement custom Array.prototype.some method?

Beginner
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23

How to implement custom Array.prototype.forEach method?

Beginner
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130

Issue Tracker UI

Beginner
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205

Build a Cricket Score Board

Intermediate
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488

Build a Typing Speed Test Component

Intermediate
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427

Interactive Color Picker with Throttle

Intermediate
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294

Promise Scheduler

Advanced
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920

Progress Bar with Controls

Beginner
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836

Flipping Card Component

Beginner
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707

ComposeAsync

Intermediate
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772

Phone Home Screen

Intermediate
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1,010

Domain Operation Simulator

Beginner
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1,203

Implement listenTo function

Beginner
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1,208

Company Structure Validator

Intermediate
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1,464

Compare Semantic Versions

Beginner
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1,134

Build Boggle Dictionary

Advanced
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1,521

Shopping Cart Checkout

Beginner
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1,385

Implement a Timeout-Based API Wrapper with Optional Retry

Intermediate
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2,451

Measure Function Execution Time

Intermediate
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1,712

useObjectState

Intermediate
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1,492

Cinema Hall Layout Structure

Intermediate
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3,409

Breadcrumb Chain Problem

Beginner
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3,059

Build an API Client

Intermediate
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2,934

Function Call Counter

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2,556

Straws on the Board

Advanced
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3,685

Chess Path Finder Visualiser

Intermediate
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2,838

Count Total Comments

Beginner
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3,732

String Compression and Decompression

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3,895

Dynamic Table Generator

Beginner
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4,148

What would be the return value (if any)?

Beginner
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3,895
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