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Function Call Counter

All Levels
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2,704

Straws on the Board

Hard
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3,813

Chess Path Finder Visualiser

Medium
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2,923

Count Total Comments

Easy
javascript logo
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3,897

String Compression and Decompression

All Levels
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3,992

Dynamic Table Generator

Easy
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4,305

What would be the return value (if any)?

Easy
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4,988

Implement Event-Driven Key-Value Store

Medium
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2,635

Implement Promisify Polyfill

Medium
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2,785

Build a Multi Step Form

Medium
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3,495

How to create a Drag and Drop List Component?

Medium
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3,872

How to create analytics SDK in JavaScript?

Medium
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6,783

Build a Two-Player Line Board Game

Medium
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2,377

How to group array of objects by key?

Easy
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7,306

How to implement custom Array.prototype.square method?

Easy
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5,578

Build a Virtual DOM to actual HTML DOM Convertor | DOM Renderer

Medium
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6,669

How to detect overlapping circles in React.js? Uber Frontend Interview Question

Hard
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8,255

How to implement a chainable Add function to calculate the sum of numbers?

Easy
javascript logo
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7,297

How to implement Array.isArray? JavaScript Interview Question | Array Polyfills

Easy
javascript logo
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7,526

How to implement Array.prototype.filter? JavaScript Interview Question | Array Polyfills

Easy
javascript logo
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5,825

How to implement an Asynchronous Task Runner with Concurrency Control? Rippling Frontend Interview Question

Medium
javascript logo
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7,282

How to build a Transfer List UI component?

All Levels
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html logo
1,615

How to implement auto-retry Promise on Rejection? | Frontend Problem Sovling

Medium
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6,443

How to implement a prize calculator? JavaScript Interview Question

All Levels
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4,761

Implement Count By | JavaScript Problem Solving

Medium
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3,570

How to build color memory game in React.js? Frontend Coding Challenge

All Levels
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7,569

How to build an Avatar Picker? Frontend UI Coding Challenge

All Levels
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5,541

How to implement feature flag functionality? Atlassian Frontend Interview Question

All Levels
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10,585

How to build Circles Game in React.js? Frontend Coding Challenge

All Levels
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6,728

How to build an Interactive JIRA Velocity Bar Chart? Atlassian Browser Coding Round Interview Question

Easy
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13,306
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Frontend Debugging Techniques That Every Engineer Must Know | Understanding Git Bisect | Part 2
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What Every React Developer Should Know!? | Part 1 | Stale Closures

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