React TreeView - Use Plain Data

If you use plain data in the TreeView, set the dataStructure property to "plain". For an example of plain data, see the following code snippet.

JavaScript
  • var plainData = [
  • { id: '1', text: 'Fruits' },
  • { id: '1_1', text: 'Apples', parentId: '1' },
  • { id: '1_2', text: 'Oranges', parentId: '1' },
  • { id: '2', text: 'Vegetables' },
  • { id: '2_1', text: 'Cucumbers', parentId: '2' },
  • { id: '2_2', text: 'Tomatoes', parentId: '2' }
  • ];
  •  
  • $(function() {
  • $("#treeViewContainer").dxTreeView({
  • dataSource: plainData,
  • dataStructure: 'plain'
  • });
  • });

As you can see, all items in a plain data source have the id and text fields, and items that have a parent, have the parentId field. Those are conventional field names. To use other names, change the keyExpr, displayExpr and parentIdExpr properties, respectively.

JavaScript
  • var plainData = [
  • { key: '1', name: 'Fruits' },
  • { key: '1_1', name: 'Apples', parent: '1' },
  • { key: '1_2', name: 'Oranges', parent: '1' },
  • { key: '2', name: 'Vegetables' },
  • { key: '2_1', name: 'Cucumbers', parent: '2' },
  • { key: '2_2', name: 'Tomatoes', parent: '2' }
  • ];
  •  
  • $(function() {
  • $("#treeViewContainer").dxTreeView({
  • dataSource: plainData,
  • dataStructure: 'plain',
  • keyExpr: 'key',
  • displayExpr: 'name',
  • parentIdExpr: 'parent'
  • });
  • });

Frequently, the id of an item is also its text. In this case, set both the keyExpr and displayExpr properties to a single value.

JavaScript
  • var plainData = [
  • { name: 'Fruits' },
  • { name: 'Apples', parentId: 'Fruits' },
  • { name: 'Oranges', parentId: 'Fruits' },
  • { name: 'Vegetables' },
  • { name: 'Cucumbers', parentId: 'Vegetables' },
  • { name: 'Tomatoes', parentId: 'Vegetables' }
  • ];
  •  
  • $(function() {
  • $("#treeViewContainer").dxTreeView({
  • dataSource: plainData,
  • dataStructure: 'plain',
  • keyExpr: 'name',
  • displayExpr: 'name'
  • });
  • });

View Demo

See Also