What is the method for obtaining tree-structured data in layui?

In layui, to access tree data, you can use the data method of the tree module. According to the documentation, tree data can be obtained in the following way:

1. To access all the data, simply use the treeObj.data method, like treeObj.data.
2. To access the data of child nodes of a specified node: you can use the treeObj.children method by passing in the index value or id of the node, such as treeObj.children(0) or treeObj.children(‘node id’).
3. To retrieve data of the parent node of a specific node, you can use the treeObj.getParent method by passing in the index value or id of the node, such as treeObj.getParent(0) or treeObj.getParent(‘node id’).
4. To retrieve data of all descendant nodes of a specific node, you can utilize the treeObj.getNodes method by passing in either the index value or id of the node, such as treeObj.getNodes(0) or treeObj.getNodes(‘node id’).

It is important to note that the above methods are all used when obtaining layui tree data, and the specific application needs to be adjusted according to the actual situation.