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Overview

The Angular TreeView is a graphical user interface component that represents hierarchical data in a tree structure. It provides great performance with its advanced features like load on demand, check boxes, multiple selection, tree navigation, drag and drop, tree node editing, and template support.


Why choose Syncfusion Angular TreeView?

Angular treeview high performance

High performance

Load on demand (lazy load) is enabled by default to reduce bandwidth usage when consuming large amounts of data. Only first-level nodes are loaded initially, and then child nodes are loaded when their parent node is expanded.

Angular treeview seamless data binding

Seamless data binding

Bind data to the TreeView component from any valid data source in JSON format. The tree data can be local or remote and retrieved via various adapters, such as OData, OData V4, URL, JSON, and web API.

Angular treeview resolution

Adapts to any resolution

TreeView has a highly responsive layout and an optimized design for desktops, touchscreens, and phones. It works well on all mobile phones that use iOS, Android, or Windows OS.

Angular treeview template designs

Create your own template designs

It can be customized via node template support, which allows you to design a custom structure for tree nodes. Node templates can be used for parent nodes, child nodes, or both, and can include images and any custom element structure.

Angular treeview hierarchical data

Visualize hierarchical data

The Angular TreeView is a graphic user interface element that displays hierarchical data as a tree structure. It can be populated with nested arrays of JSON objects from a hierarchical data source.

Angular treeview customizable themes

Attractive, customizable themes

Cutting-edge design with several built-in themes, such as Fluent, Tailwind CSS, Bootstrap, Material, and Fabric. Utilize the online Theme Studio tool to customize themes of treeview easily.

Angular treeview globalization and localization

Globalization and localization

Enable users from different locales to use the component by formatting dates, currency, and numbering to suit preferences.


Angular TreeView code example

Easily get started with the Angular TreeView using a few simple lines of HTML and TSX code as demonstrated below. Also explore our Angular TreeView example that shows you how to render and configure the TreeView in Angular.

<ejs-treeview id="default" [fields]='field'></ejs-treeview>
public hierarchicalData: Object[] = [
        { id: '01', name: 'Local Disk (C:)', expanded: true,
            subChild: [
                {
                    id: '01-01', name: 'Program Files',
                    subChild: [
                        { id: '01-01-01', name: 'Windows NT' },
                        { id: '01-01-02', name: 'Windows Mail' },
                        { id: '01-01-03', name: 'Windows Photo Viewer' },
                    ]
                },
                {
                    id: '01-02', name: 'Users', expanded: true,
                    subChild: [
                        { id: '01-02-01', name: 'Smith' },
                        { id: '01-02-02', name: 'Public' },
                        { id: '01-02-03', name: 'Admin' },
                    ]
                },
                {
                    id: '01-03', name: 'Windows',
                    subChild: [
                        { id: '01-03-01', name: 'Boot' },
                        { id: '01-03-02', name: 'FileManager' },
                        { id: '01-03-03', name: 'System32' },
                    ]
                },
            ]
        },
        {
            id: '02', name: 'Local Disk (D:)',
            subChild: [
                {
                    id: '02-01', name: 'Personals',
                    subChild: [
                        { id: '02-01-01', name: 'My photo.png' },
                        { id: '02-01-02', name: 'Rental document.docx' },
                        { id: '02-01-03', name: 'Pay slip.pdf' },
                    ]
                },
                {
                    id: '02-02', name: 'Projects',
                    subChild: [
                        { id: '02-02-01', name: 'ASP Application' },
                        { id: '02-02-02', name: 'TypeScript Application' },
                        { id: '02-02-03', name: 'React Application' },
                    ]
                },
                {
                    id: '02-03', name: 'Office',
                    subChild: [
                        { id: '02-03-01', name: 'Work details.docx' },
                        { id: '02-03-02', name: 'Weekly report.docx' },
                        { id: '02-03-03', name: 'Wish list.csv' },
                    ]
                },
            ]
        },
        {
            id: '03', name: 'Local Disk (E:)', icon: 'folder',
            subChild: [
                {
                    id: '03-01', name: 'Pictures',
                    subChild: [
                        { id: '03-01-01', name: 'Wind.jpg' },
                        { id: '03-01-02', name: 'Stone.jpg' },
                        { id: '03-01-03', name: 'Home.jpg' },
                    ]
                },
                {
                    id: '03-02', name: 'Documents',
                        subChild: [
                        { id: '03-02-01', name: 'Environment Pollution.docx' },
                        { id: '03-02-02', name: 'Global Warming.ppt' },
                        { id: '03-02-03', name: 'Social Network.pdf' },
                    ]
                },
                {
                    id: '03-03', name: 'Study Materials',
                    subChild: [
                        { id: '03-03-01', name: 'UI-Guide.pdf' },
                        { id: '03-03-02', name: 'Tutorials.zip' },
                        { id: '03-03-03', name: 'TypeScript.7z' },
                    ]
                },
            ]
        }
    ];
public field:Object ={ dataSource: this.hierarchicalData, id: 'id', text: 'name', child: 'subChild' };

Angular TreeView icon and images

Tree node with icons

Display nodes with labels and icons to present the content in a more readable format. This is helpful in making a typical directory tree and file system.


Check box

The Angular TreeView component provides built-in support for check boxes, allowing users to select more than one item.

The TreeView check boxes also have a tri-state mode, which is applicable only for parent nodes. In this mode, the parent node will go into the indeterminate state when the child nodes are partially checked.

Angular TreeView checkbox support


Drag and drop

In Angular TreeView, Nodes can be dragged and dropped at all levels of the same TreeView.

Angular Tree component drag and drop inside a tree

Inside the tree

Tree nodes can be dragged and dropped from one parent node to another within the same level or at different levels.

Angular Tree component drag and drop between trees

Outside the tree

Extending the drop behavior allows users to drop tree nodes from one treeview to another.

Angular Tree component dragging and dropping to external container

External container

Drop tree nodes to any external container or component by extending the angular treeview node drop action.


Multiple node selection

The Angular TreeView component allows users to select multiple nodes. When the drag-and-drop feature is enabled, all the selected nodes can be dragged at the same time.

Angular TreeView multiple node selection

Angular TreeView multiple node drag and drop


Angular TreeView editable nodes

Editable nodes

Edit the tree nodes’ label text on the client side by double-clicking it. When editing treeview nodes, the treeview data source will also be updated with the modified data.


Sorting tree nodes

Render the TreeView nodes in the ascending or descending order based on the label text for improved readability.

Angular TreeView sorting


Angular TreeView node template

Node template

The Angular TreeView component can be customized through its node template support, which allows you to define a custom structure for tree nodes. You can use node templates specifically for parent nodes, child nodes, or both, and include images and any custom element structure.


Expand collapse icons

Easily customize the expand and collapse icons based on the requirement of your application.

Angular TreeView expand collapse icons customization


Angular TreeView tooltip

Tooltips for tree nodes

It supports tooltips for tree nodes that display information about the nodes while hovering over them. You can bind a tooltip from a data source along with node fields.


Context menu

A context menu can be integrated with the TreeView component to open when a node is right-clicked. The menu helps users perform node manipulations such as adding, removing, and renaming nodes.

Angular TreeView context menu


Angular TreeView text wrap

Text wrap

A node’s text wraps when it reaches edge of the TreeView. The node’s height will be adjusted automatically based on the content.


Tree Node Customization

It allows you to customize the tree nodes by level. For example, apply specific styles to leaf nodes, first child nodes, and second level nodes, etc.

Angular TreeView TreeNode customization


Angular TreeView TreeNode validation

Tree Node Validation

You can add validation to the tree node’s text on editing like required, a minimum or maximum length, etc.


Accessibility

Keyboard navigation in Angular TreeView

Keyboard navigation

The Angular TreeView component ensures that every cell is accessible using the keyboard. Major features like sort, select, and edit can be performed using keyboard commands alone; no mouse interaction is required. This helps in creating highly accessible applications using this component.

Accessibility and screen reader support in Angular TreeView

Screen reader

The Angular TreeView has complete WAI-ARIA accessibility support. The Data Grid UI includes high-contrast visual elements that help visually impaired people to have the best viewing experience. Also, valid UI descriptions are easily accessible through assistive technologies such as screen readers.

Show right-to-left language in Angular TreeView

Right to left (RTL)

Right-to-left rendering allows displaying the text and layout of the TreeView from right to left. This improves the user experience and accessibility for RTL languages.


Angular version compatibility

With continuous improvement in Angular versions, the Angular TreeView is kept up to date to make it compatible with versions starting from 4 to the latest version.

Angular version compatibility





Other supported frameworks

TreeView is also available in Blazor, React, Vue, and JavaScript frameworks. Check out the different TreeView platforms from the links below,

Supported browsers

The Angular TreeView works well with all modern web browsers such as Chrome, Firefox, Microsoft Edge, Safari, and Opera.

Supported browsers

80+ ANGULAR UI COMPONENTS

Frequently Asked Questions

  • Display hierarchical data in a tree-view structure.
  • Load a wide range of nodes with optimal performance.
  • Flexible data binding with support to use local and remote data sources such as JSON, RESTful services, OData services, and WCF services.
  • Drag and drop multiple selected tree nodes anywhere.
  • Select multiple nodes using built-in check boxes.
  • Edit node text inline with editable nodes support.
  • Easily customize nodes, expand icons, and collapse icons.
  • One of the best Angular Treeview in the market that offers feature-rich UI to interact with the software.
  • Simple configuration and API.
  • Supports all modern browsers.
  • Touch-friendly and responsive.
  • Expansive learning resources such as demos and documentation to learn quickly and get started with Angular TreeView.

You can find our Angular TreeView demo which demonstrates how to render and configure the TreeView.

No, this is a commercial product and requires a paid license. However, a free community license is also available for companies and individuals whose organizations have less than $1 million USD in annual gross revenue, 5 or fewer developers, and 10 or fewer total employees.

A good place to start would be our comprehensive getting started documentation.

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