Node

You can access nodes using the getRootNode() method and within some event handlers, for example, onNodesInitialized.

For plain data, the value of the key depends on the keyExpr option. For hierarchical data, the key can be generated automatically or set in the underlying Store of the data source.

See Also

• key in ArrayStore | CustomStore | LocalStore | ODataStore

The level of the root node is -1. This node is not visualized and is used to access the full hierarchy of nodes. The root node's children have level 0, the children's children have level 1, and so forth.