data

sets a dataset for a tree

data?: array;

Example

const data = new dhx.TreeCollection();
data.load("../common/treedata.json");
const tree = new dhx.Tree("tree_container", {data: data});

Related samples:

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

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

const tree = new dhx.Tree("tree_container", {
    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"
                    }
                }
            ]
        }
    ]
});

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

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

• parent - (string) the id of the parent of a tree item

For example, you can get the parent of an item using the getItem method of tree collection.

tree.data.getItem("Thrillers").parent
// "Books"

tree.data.getItem("Books").parent
// "_ROOT_u1574768464563"