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How to create a flat version of a deeply nested array? [Programming Interview Question]
All Levels
19,085
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How to build a custom timer hook in React.js? | useTimer | JavaScript Interview Question
All Levels
17,613
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Build A Mini Clone Of Google Calendar | Frontend Coding Challenge | JavaScript Interview Questions | DevKode DOM Challenge
All Levels
12,944
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Implement Debounce Function | Flipkart UI - JavaScript Interview Questions
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10,184
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Implement Accordion Component in React.js | JavaScript Interview Question
Intermediate
10,952
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How to implement Event Emitter in JavaScript? | Facebook Interview Question
Intermediate
13,104
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How to implement DOM like structure tree!? | Frontend Interview Question | Advanced JavaScript
Advanced
8,167
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How to create OTP Input Component? | Frontend Coding Challege | JavaScript | HTML | CSS | React.js
Intermediate
8,332
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How to build a File Explorer? Atlassian Frontend Machine Coding Round Question | JavaScript Interview Question | React.js
Intermediate
18,567
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Build Country Capital Game | Microsoft Frontend Interview Question | JavaScript | React.js
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12,247
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Word Search Game
Advanced
347
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Shopping Cart Checkout
Beginner
489
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Implement a Timeout-Based API Wrapper with Optional Retry
Intermediate
1,548
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Measure Function Execution Time
Intermediate
996
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useObjectState
Intermediate
863
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Cinema Hall Layout Structure
Intermediate
2,168
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Breadcrumb Chain Problem
Beginner
2,314
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Build an API Client
Intermediate
1,970
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Function Call Counter
All Levels
1,394
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Straws on the Board
Advanced
2,956
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Chess Path Finder Visualiser
Intermediate
2,269
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Count Total Comments
Beginner
2,843
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String Compression and Decompression
All Levels
3,291
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Dynamic Table Generator
Beginner
3,429
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What would be the return value (if any)?
Beginner
2,353
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Implement Event-Driven Key-Value Store
Intermediate
1,948
Solve
Implement Promisify Polyfill
Intermediate
1,832
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Build a Multi Step Form
Intermediate
2,155
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How to create a Drag and Drop List Component?
Intermediate
3,035
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How to create analytics SDK in JavaScript?
Intermediate
5,780
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Build a Two-Player Line Board Game
Intermediate
1,092
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How to group array of objects by key?
Beginner
6,551
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How to implement custom Array.prototype.square method?
Beginner
4,783
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Build a Virtual DOM to actual HTML DOM Convertor | DOM Renderer
Intermediate
5,805
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How to detect overlapping circles in React.js? Uber Frontend Interview Question
Advanced
7,145
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How to implement a chainable Add function to calculate the sum of numbers?
Beginner
6,491
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How to implement Array.isArray? JavaScript Interview Question | Array Polyfills
Beginner
6,681
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How to implement Array.prototype.filter? JavaScript Interview Question | Array Polyfills
Beginner
5,129
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How to implement an Asynchronous Task Runner with Concurrency Control? Rippling Frontend Interview Question
Intermediate
6,051
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How to build a Transfer List UI component?
All Levels
902
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Top JavaScript Array Interview Questions | Problem Solving | Array Polyfills
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What Every React Developer Should Know!? | Part 1 | Stale Closures
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