<TreeViewComponent
  // Data
  fields={{ dataSource, id, text, parentID, child, hasChildren, expanded }}
  
  // Selection & Checking
  allowMultiSelection={true}
  showCheckBox={true}
  autoCheck={true}
  checkedNodes={[]}
  selectedNodes={[]}
  
  // Interaction
  allowDragAndDrop={true}
  allowEditing={true}
  
  // Customization
  nodeTemplate={templateFunction}
  statelessTemplates={['nodeTemplate']} // NEW: Performance optimization
  cssClass="custom"
  
  // Display
  allowTextWrap={true}
  fullRowSelect={true}
  
  // Behavior
  loadOnDemand={true}
  expandOn="Click"  // or "DoubleClick" or "None" (accordion)
  sortOrder="Ascending"
  
  // Persistence & Internationalization
  enablePersistence={true}
  enableRtl={false}
  locale="en-US"
  
  // Events
  onNodeSelected={handleSelect}
  onNodeExpanded={handleExpand}
  onNodeDropped={handleDrop}
  // ... many more events
/>

import * as React from 'react';
import { TreeViewComponent } from '@syncfusion/ej2-react-navigations';
import '@syncfusion/ej2-react-navigations/styles/tree-view.css';

function App() {
  const hierarchicalData = [
    {
      id: 1,
      name: 'Syncfusion',
      expanded: true,
      child: [
        { id: 2, name: 'React Components' },
        { id: 3, name: 'Angular Components' },
      ]
    },
    {
      id: 4,
      name: 'Essential Studio',
      child: [
        { id: 5, name: 'Web' },
        { id: 6, name: 'Desktop' }
      ]
    }
  ];

  const fields = {
    dataSource: hierarchicalData,
    id: 'id',
    text: 'name',
    child: 'child'
  };

  const handleNodeSelected = (args) => {
    console.log('Selected:', args.nodeData.name);
  };

  return (
    <TreeViewComponent
      fields={fields}
      allowDragAndDrop={true}
      allowEditing={true}
      showCheckBox={true}
      onNodeSelected={handleNodeSelected}
    />
  );
}

export default App;

TreeViewComponent
├── Data Layer
│   ├── Hierarchical Structure
│   ├── Self-Referential Model
│   ├── Remote Data (OData, WebAPI)
│   └── Load-on-Demand
│
├── Node Management
│   ├── CRUD Operations (add, remove, update, move)
│   ├── Dynamic Refresh
│   └── Programmatic Access
│
├── User Interaction
│   ├── Selection (Single/Multi)
│   ├── Checking (Three-state)
│   ├── Editing (Inline)
│   ├── Drag-Drop (Single/Multi)
│   └── Keyboard Navigation
│
├── Customization
│   ├── Templates (String/HTML/JSX)
│   ├── Stateless Templates (Performance)
│   ├── drawNode Callback (Custom Rendering)
│   ├── Icons & Styling
│   └── CSS Customization by Level
│
├── Advanced Features
│   ├── Filtering & Searching
│   ├── Sorting (Global & Level-wise)
│   ├── Load-on-Demand Caching
│   ├── State Persistence
│   ├── RTL & Localization
│   ├── Accordion Pattern
│   └── Performance Optimization
│
├── Integration
│   ├── Context Menu
│   ├── Toolbar
│   ├── Tooltips
│   └── Data Coordination
│
├── Accessibility
│   ├── Keyboard Shortcuts (15+)
│   ├── ARIA Attributes
│   ├── Screen Reader Support
│   └── WCAG 2.1 Compliance
│
└── Event System
    ├── Data Events (created, dataBound)
    ├── Selection Events (nodeSelected, nodeSelecting)
    ├── Expansion Events (nodeExpanded, nodeExpanding)
    ├── Editing Events (nodeEdited, nodeEditing)
    ├── Drag-Drop Events (nodeDragStart, nodeDragging, nodeDropped)
    ├── Checkbox Events (nodeChecked, nodeChecking)
    ├── Custom Rendering (drawNode)
    └── Keyboard Events (keyPress)