data

Optional. Sets a dataset for a tree

data?: object[];

Parameters:

Each data object can have the following properties:

value	(string) the value of an item
id	(string, number) the id of an item
opened	(boolean) optional, defines whether an item is opened by default
checkbox	(boolean) optional, enables/disables displaying a checkbox for a tree item
items	(array) an array of children items
icon	(object) allows adding custom icons for a tree item Related sample: Tree. Custom dataset icons

Example

const data = [
    {
        "value": "Books",
        "id": "Books",
        "opened": true,
        "checkbox": true,
        "items": [
            {
                "value": "Thrillers",
                "id": "Thrillers",
                "icon": { 
                    "folder": "fas fa-book", 
                    "openFolder": "fas fa-book-open", 
                    "file": "fas fa-file"
                }
            }
        ]
    }
];

const tree = new dhx.Tree("tree", {
    data: dataset
});

Related samples:

• Tree. Initialization with config.data
• Tree. Initialization with external TreeCollection

You can disable displaying of a checkbox for a tree item via the update method of tree collection.

tree.data.update("Books", {checkbox:false});