Prepare
Question Types
Programming
UI Based
Quiz
Languages
JavaScript
HTML/CSS/JavaScript
React
Guides
Company Guides
Frontend System Design
Resume
Time Savers
Study Plans
Focus Areas
Company Questions
Resume Review
More
Try a random question
Confused about where to start? Try a randomly selected question from our vast collection of interview questions.
All Questions
Resources
Collections
Video Tutorials
Pricing
Login
Devtools Tech
Team Devtools Tech Official Profile
Questions
Resources
Resume
Submissions
Video Tutorials
How to create a flat version of a deeply nested array? [Programming Interview Question]
All Levels
31,951
Solve
How to build a custom timer hook in React.js? | useTimer | JavaScript Interview Question
All Levels
25,757
Solve
Build A Mini Clone Of Google Calendar View
All Levels
19,099
Solve
Implement Debounce Function | Flipkart UI - JavaScript Interview Questions
All Levels
16,438
Solve
Implement Accordion Component in React.js | JavaScript Interview Question
Medium
15,267
Solve
How to implement Event Emitter in JavaScript? | Facebook Interview Question
Medium
18,121
Solve
How to implement DOM like structure tree!? | Frontend Interview Question | Advanced JavaScript
Hard
11,874
Solve
How to create OTP Input Component? | Frontend Coding Challege | JavaScript | HTML | CSS | React.js
Medium
11,570
Solve
How to build a File Explorer? Atlassian Frontend Machine Coding Round Question | JavaScript Interview Question | React.js
Medium
28,332
Solve
Build Country Capital Game | Microsoft Frontend Interview Question | JavaScript | React.js
All Levels
18,140
Solve
Flatten Nested Object - II
Easy
45
Solve
Priority Based Data Fetching
Medium
49
Solve
Exclude Items
Medium
35
Solve
Search Page with Highlighting
Medium
22
Solve
Find Employee
Easy
106
Solve
Spreadsheet Grid
Medium
127
Solve
Expense Split Manager
Hard
56
Solve
Resolve Function Values in a Nested Object
Medium
100
Solve
Repeat Characters
Easy
68
Solve
Feedback Review System
Medium
127
Solve
Grid Toggle
Medium
229
Solve
Priority Based Modals
Medium
139
Solve
Interactive Voting Poll Component
Easy
221
Solve
Chainable Driver Class
Medium
192
Solve
Cursor Tracker
Medium
130
Solve
Dynamic Grid Challenge
Medium
155
Solve
Identical DOM Trees
Medium
150
Solve
Transaction Confirmation
Medium
119
Solve
Reusable Dropdown Component with Search
Easy
318
Solve
Infinite Scroll Pagination
Easy
748
Solve
How to implement custom Array.prototype.some method?
Easy
539
Solve
How to implement custom Array.prototype.forEach method?
Easy
482
Solve
Issue Tracker UI
Easy
737
Solve
Build a Cricket Score Board
Medium
805
Solve
Build a Typing Speed Test Component
Medium
683
Solve
Interactive Color Picker with Throttle
Medium
419
Solve
Promise Scheduler
Hard
1,207
Solve
Progress Bar with Controls
Easy
1,081
Solve
Flipping Card Component
Easy
894
Solve
ComposeAsync
Medium
1,004
Solve
Back
Next
