syncfusion-javascript-menu

# Implementing Syncfusion TypeScript Menu The Syncfusion Menu is a graphical user interface component that serves as a navigation header for applications and websites. It provides support for multi-level nested menu items, data binding, animations, scrolling, and comprehensive event handling. ## When to Use This Skill Use this skill when you need to: - **Create navigation hierarchies**: Build hierarchical menu structures with multiple levels of nested items - **Implement data-driven menus**: Bind menu items from JSON data, services, or self-referential data sources - **Customize menu appearance**: Configure animations, orientation, styling, and themes - **Handle menu interactions**: Respond to user clicks, menu open/close events, and item selection - **Build responsive menus**: Create horizontal/vertical menus with scrolling for large datasets - **Support accessibility**: Implement keyboard navigation and screen reader support - **Manage menu state**: Dynamically add, remove, enable, disable, show, or hide menu items ## Control Overview ### Key Features - **Data Binding**: Supports hierarchical JSON data, self-referential data, and service-based data sources - **Template Support**: Customize menu items with HTML templates and custom content - **Orientation**: Display menus in horizontal or vertical direction - **Animations**: Apply fade-in, zoom-in, and slide-down effects to sub-menus - **Scrolling**: Enable scrolling for both horizontal and vertical menus - **Accessibility**: Built-in keyboard navigation and ARIA support for screen readers - **Events**: Comprehensive event system with select, beforeOpen, onOpen, beforeClose, onClose, and beforeItemRender - **Item Management**: Add, remove, enable, disable, show, or hide items dynamically - **RTL Support**: Right-to-left language support - **Hamburger Mode**: Mobile-friendly responsive menu ## Documentation and Navigation Guide ### Getting Started 📄 **Read:** [references/getting-started.md](references/getting-started.md) - Installation and package dependencies - Development environment setup - CSS imports and theme configuration - Basic menu initialization with TypeScript - HTML structure for menu rendering - Running your first menu application ### Menu Items and Hierarchy 📄 **Read:** [references/menu-items-and-hierarchy.md](references/menu-items-and-hierarchy.md) - Creating simple flat menu items - Building multi-level nested hierarchies - MenuItem properties overview - Item text, IDs, URLs, and icons - Separator items for grouping - MenuItemModel interface reference ### Data Binding and Field Mapping 📄 **Read:** [references/data-binding.md](references/data-binding.md) - Binding hierarchical JSON data - Self-referential data source patterns - Data service integration - FieldSettings for custom field mapping - HTML element binding - Large dataset handling ### Customization and Styling 📄 **Read:** [references/customization-and-styling.md](references/customization-and-styling.md) - CSS class customization - Horizontal versus vertical orientation - Animation settings and effects - Rounded corner styling - Custom menu items with templates - Right-to-left (RTL) support - Theme customization ### Working with Events 📄 **Read:** [references/working-with-events.md](references/working-with-events.md) - Event types and lifecycle - Select event handling - beforeOpen and onOpen events - beforeClose and onClose events - beforeItemRender event - Event argument properties - Real-world event examples ### Advanced Features and Item Management 📄 **Read:** [references/advanced-features.md](references/advanced-features.md) - Adding and removing menu items - Enabling and disabling items - Hiding and showing items - Scrollable menus (enableScrolling) - Sub-menu positioning - Hamburger mode for mobile - Menu effects and transitions - Performance optimization ### Use Cases and Scenarios 📄 **Read:** [references/use-cases-and-scenarios.md](references/use-cases-and-scenarios.md) - Scrollable menus with large datasets - Accordion menu patterns - Sidebar menu implementation - Toolbar integration - Context menu patterns - Mnemonic UI implementation - Menu with icons and titles ### Accessibility and Best Practices 📄 **Read:** [references/accessibility-and-best-practices.md](references/accessibility-and-best-practices.md) - Keyboard navigation support - ARIA attributes and screen readers - HTML sanitization for security - Mobile responsiveness - Performance optimization tips - Common pitfalls and solutions - Testing and validation ### Complete API Reference 📄 **Read:** [references/api-reference.md](references/api-reference.md) - Menu properties with types and defaults - MenuItem properties and options - Menu methods and parameters - Events with argument structures - Animation effects and enums - Field settings configuration - Complete code examples for each API element ## Quick Start Example ```typescript import { Menu, MenuItemModel } from '@syncfusion/ej2-navigations'; import { enableRipple } from '@syncfusion/ej2-base'; enableRipple(true); // Define menu items let menuItems: MenuItemModel[] = [ { text: 'File', items: [ { text: 'Open' }, { text: 'Save' }, { text: 'Exit' } ] }, { text: 'Edit', items: [ { text: 'Cut' }, { text: 'Copy' }, { text: 'Paste' } ] }, { text: 'View', items: [ { text: 'Toolbar' }, { text: 'Sidebar' } ] }, { text: 'Help' } ]; // Initialize Menu let menuObj: Menu = new Menu({ items: menuItems }, '#menu'); ``` ## Common Patterns ### Pattern 1: Responding to Item Selection ```typescript let menuObj: Menu = new Menu({ items: menuItems, select: (args: MenuEventArgs) => { console.log(`Selected: ${args.item.text}`); } }, '#menu'); ``` ### Pattern 2: Dynamic Item Management ```typescript // Add new item menuObj.insertAfter([{ text: 'Print' }], '#open'); // Enable/disable items menuObj.enableItems([0, 1]); menuObj.disableItems([2]); // Show/hide items menuObj.showItems([0, 1]); menuObj.hideItems([2]); ``` ### Pattern 3: Event Tracking ```typescript let menuObj: Menu = new Menu({ items: menuItems, beforeOpen: (args: BeforeOpenCloseMenuEventArgs) => { console.log('Menu opening:', args.name); }, onOpen: (args: OpenCloseMenuEventArgs) => { console.log('Menu opened:', args.name); }, beforeClose: (args: BeforeOpenCloseMenuEventArgs) => { console.log('Menu closing:', args.name); } }, '#menu'); ``` ### Pattern 4: Data Binding from JSON ```typescript let hierarchicalData: MenuItemModel[] = [ { text: 'Categories', items: [ { text: 'Electronics' }, { text: 'Furniture' }, { text: 'Accessories' } ] } ]; let menuObj: Menu = new Menu({ items: hierarchicalData }, '#menu'); ``` ## Key Properties and Methods ### Essential Properties | Property | Type | Purpose | |----------|------|---------| | `items` | `MenuItemModel[]` | Array of menu items to display | | `orientation` | `Orientation` | Horizontal or Vertical layout | | `animationSettings` | `MenuAnimationSettingsModel` | Animation effects for sub-menus | | `enableScrolling` | `boolean` | Enable scrolling for large menus | | `enableRtl` | `boolean` | Right-to-left support | | `cssClass` | `string` | Custom CSS classes | | `fields` | `FieldSettingsModel` | Field mapping for data binding | ### Essential Methods | Method | Parameters | Purpose | |--------|-----------|---------| | `open()` | `element?: HTMLElement` | Open menu or sub-menu | | `close()` | - | Close menu | | `enableItems()` | `items: string[] \| number[]` | Enable specific items | | `disableItems()` | `items: string[] \| number[]` | Disable specific items | | `hideItems()` | `items: string[] \| number[]` | Hide specific items | | `showItems()` | `items: string[] \| number[]` | Show hidden items | | `insertAfter()` | `items: MenuItemModel[], target?: string \| number` | Insert items after target | | `insertBefore()` | `items: MenuItemModel[], target?: string \| number` | Insert items before target | | `removeItems()` | `items: string[] \| number[]` | Remove specific items | ## Common Use Cases 1. **Application Navigation**: Use for main application navigation bars 2. **Dropdown Menus**: Context menus and dropdown navigation 3. **Hierarchical Navigation**: Multi-level category or section navigation 4. **Responsive Menus**: Mobile-friendly hamburger menus 5. **Custom Layouts**: Template-based custom menu items 6. **Dynamic Updates**: Real-time menu item management 7. **Accessibility**: Keyboard-navigable menus --- **Need more details?** Check the complete references above for implementation examples, advanced configurations, and best practices.