React Machine Coding
Build real UI components asked at top companies. Practice with an in-browser editor, instant preview, and detailed solutions.
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Solved/
Status
Name
Difficulty
Companies
React Tic-Tac-Toe Engine
Medium
React Tic-Tac-Toe Engine
Medium
Performant Image Slider
Medium
Performant Image Slider
Medium
API Search and Render Image
MediumPRO
API Search and Render ImagePRO
Medium
Accessible React Tabs
Easy
Accessible React Tabs
Easy
Recursive File Explorer
Medium
Recursive File Explorer
Medium
Traffic Light
Medium
Traffic Light
Medium
Star Rating
EasyPRO
Star RatingPRO
Easy
Accordion
Easy
Accordion
Easy
Auto-complete
HardPRO
Auto-completePRO
Hard
Modal System
Medium
Modal System
Medium
Pagination
MediumPRO
PaginationPRO
Medium
Multi-step Form
Medium
Multi-step Form
Medium
Toast Notification
HardPRO
Toast NotificationPRO
Hard
Virtual List (Windowing)
HardPRO
Virtual List (Windowing)PRO
Hard
Custom Query Hook
HardPRO
Custom Query HookPRO
Hard
Kanban Board (DnD)
Hard
Kanban Board (DnD)
Hard
Nested Checkboxes (Tri-state)
HardPRO
Nested Checkboxes (Tri-state)PRO
Hard
Product Dashboard
HardPRO
Product DashboardPRO
Hard
Form Builder (JSON Schema)
HardPRO
Form Builder (JSON Schema)PRO
Hard
Infinite Scroll
HardPRO
Infinite ScrollPRO
Hard
Analog Clock
MediumPRO
Analog ClockPRO
Medium
Memory Game
HardPRO
Memory GamePRO
Hard
Poll Widget
MediumPRO
Poll WidgetPRO
Medium
Transfer List
HardPRO
Transfer ListPRO
Hard
Progress Bar
EasyPRO
Progress BarPRO
Easy
Stopwatch
Easy
Stopwatch
Easy
Tooltip
Easy
Tooltip
Easy
Color Swatch
Easy
Color Swatch
Easy
Like Dislike I
Easy
Like Dislike I
Easy
Like Dislike II
MediumPRO
Like Dislike IIPRO
Medium
Nested Comments
MediumPRO
Nested CommentsPRO
Medium
Node Unwinder
MediumPRO
Node UnwinderPRO
Medium
Drag and Drop Sortable List
HardPRO
Drag and Drop Sortable ListPRO
Hard
Configurable Text Transformer
MediumPRO
Configurable Text TransformerPRO
Medium
Card Deck I
Easy
Card Deck I
Easy
Card Deck II
MediumPRO
Card Deck IIPRO
Medium
Card Deck III
HardPRO
Card Deck IIIPRO
Hard
Progress Bar I
Easy
Progress Bar I
Easy
Progress Bar II
MediumPRO
Progress Bar IIPRO
Medium
Progress Bar III
HardPRO
Progress Bar IIIPRO
Hard
Tree Navigation I
Easy
Tree Navigation I
Easy
Tree Navigation II
MediumPRO
Tree Navigation IIPRO
Medium
Tree Navigation III
HardPRO
Tree Navigation IIIPRO
Hard
Tic Tac Toe III
HardPRO
Tic Tac Toe IIIPRO
Hard
AI Streaming Chat Window
MediumAI
AI Streaming Chat WindowAI
Medium
Slash-Command Prompt Input
MediumAI
Slash-Command Prompt InputAI
Medium
AI Citations Panel
MediumPROAI
AI Citations PanelPROAI
Medium
AI Inline Diff Viewer
HardPROAI
AI Inline Diff ViewerPROAI
Hard
AI Agent Trace Renderer
HardPROAI
AI Agent Trace RendererPROAI
Hard
useArray
MediumPROreacthooksarrays
useArrayPROreacthooksarrays
Medium
useCounter II
EasyPROreacthooksstate
useCounter IIPROreacthooksstate
Easy
Upload Queue with Progress
HardPRO
Upload Queue with ProgressPRO
Hard
OTP Verification Input
Easy
OTP Verification Input
Easy
Restaurant Menu Cart Pricing
MediumPRO
Restaurant Menu Cart PricingPRO
Medium
Realtime Order Tracker
HardPRO
Realtime Order TrackerPRO
Hard
Product Listing with API Retry
Medium
Product Listing with API Retry
Medium
AI Model Picker + Cost/Latency Badge
MediumAI
AI Model Picker + Cost/Latency BadgeAI
Medium
AI Tool-Call Cards in Chat
HardPROAI
AI Tool-Call Cards in ChatPROAI
Hard
AI Speculative / Optimistic Token UI
HardPROAI
AI Speculative / Optimistic Token UIPROAI
Hard