devtools.tech | The only way to prepare for frontend interviews

Get started with free interview questions

Get Lifetime access to our premium content.

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

45,796

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

36,688

Build A Mini Clone Of Google Calendar View

27,490

Implement Debounce Function | Flipkart UI - JavaScript Interview Questions

25,249

Implement Accordion Component in React.js | JavaScript Interview Question

22,183

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

26,999

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

18,732

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

17,666

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

40,387

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

27,061

Prettify JSON String

38

Versioned Configuration Store

43

Selectable Grid Cells

50

Group Products by Category

77

Query Builder

53

Multi-Stepper Component

134

Dynamic Currying Sum

137

Autocomplete Search Cache (LRU)

132

Delete Nested Object Property

124

Implement useDidUpdate Custom React Hook

120

Implement useFetch Custom React Hook

143

Chainable Currency Calculator

97

Async Fetcher with Error Handling

146

Count Pair Sums with Updates

89

Number to Words Converter

75

Time Since Last Train

169

Can you predict the answer? (this keyword)

4,528

Real-Time Comment Feed

128

Count Special Numbers

153

Custom React Hook for Media Query Detection

150

Tooltip for an Anchor Element

53

File Explorer II

164

Flatten Nested Object - II

247

Priority Based Data Fetching

313

Exclude Items

122

Search Page with Highlighting

74

Find Employee

312

Spreadsheet Grid

364

Expense Split Manager

166

Resolve Function Values in a Nested Object

208