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Machine Coding Round

1. UI Components & Widgets​

Basic Components​

  • Custom Modal/Dialog
  • Tabs Implementation
  • Accordion/Collapsible Sections
  • Carousel/Image Slider
  • Star Rating Component
  • Toggle Switch
  • Pagination
  • Breadcrumbs
  • Progress Bar/Loading Spinner
  • Tooltips/Popovers

Advanced Components​

  • Autocomplete/Typeahead Search
  • Multi-select Dropdown with Search
  • Infinite Scroll
  • Virtual List/Table
  • File Upload with Preview
  • Rich Text Editor
  • Color Picker
  • Date Picker
  • Drag and Drop Interface
  • Kanban Board

2. Game-like Applications​

Common Games​

  • Tic Tac Toe
  • Snake Game
  • Memory Card Game
  • 2048 Game
  • Minesweeper
  • Connect Four
  • Whack-a-Mole

Interactive Features​

  • Timer/Stopwatch
  • Chess Board Layout
  • Drawing Board
  • Pixel Art Editor

3. Application Features​

Data Management​

  • Todo List with CRUD
  • Shopping Cart
  • Form Builder
  • Poll/Survey Creator
  • Spreadsheet-like Grid
  • File Explorer
  • Calendar Events

State Management​

  • Undo/Redo Functionality
  • State Machine Implementation
  • Theme Switcher
  • Multi-step Form Wizard

4. Layout & Navigation​

Layout Components​

  • Grid System Implementation
  • Responsive Navigation Bar
  • Sidebar Menu
  • Masonry Layout
  • Sticky Header/Footer
  • Split Pane Layout
  • Nested Menu
  • Breadcrumb Generator
  • URL Router
  • History Management

5. API Integration​

Data Handling​

  • Data Grid with Sorting/Filtering
  • Debounced Search
  • Paginated List with API
  • Real-time Data Updates
  • Caching Implementation

Error Handling​

  • Retry Mechanism
  • Loading States
  • Error Boundaries
  • Fallback Content

6. Performance Optimization​

Loading Optimization​

  • Image Lazy Loading
  • Infinite Scroll with Virtualization
  • Code Splitting Implementation
  • Resource Preloading

Runtime Optimization​

  • Debounce/Throttle Implementation
  • Memoization Usage
  • Event Delegation
  • DOM Recycling

7. Common Design Patterns​

Component Patterns​

  • Compound Components
  • Render Props
  • Higher Order Components
  • Custom Hooks
  • Provider Pattern

State Patterns​

  • Observer Pattern
  • Pub/Sub Pattern
  • Command Pattern
  • Factory Pattern

8. Accessibility Features​

A11y Components​

  • Screen Reader Navigation
  • Skip Links
  • Focus Management
  • ARIA Implementation
  • Keyboard Navigation

9. Testing Scenarios​

Test Implementation​

  • Unit Test Setup
  • Integration Testing
  • Component Testing
  • Mock API Testing
  • Performance Testing

Common Requirements & Constraints​

Functional Requirements​

  • Cross-browser Compatibility
  • Responsive Design
  • Error Handling
  • Loading States
  • Empty States

Technical Constraints​

  • Vanilla JS/Specific Framework
  • No External Libraries
  • Browser Support
  • Performance Metrics
  • Time Constraints

Tips for Implementation​

  1. Start with Requirements

    • Clarify all features
    • Discuss edge cases
    • Set priorities
    • Define constraints

  2. Plan Structure

    • Component hierarchy
    • State management
    • Data flow
    • Event handling

  3. Basic Implementation

    • Core functionality first
    • Basic styling
    • Error handling
    • Loading states

  4. Additional Features

    • Enhanced UI/UX
    • Optimizations
    • Edge cases
    • Testing

  5. Common Pitfalls to Avoid

    • Over-engineering
    • Premature optimization
    • Skipping error handling
    • Ignoring accessibility
    • Poor code organization