This Demo only shows how to drag & drop nodes using the basic method and configure parameters.
1) Must set 'setting.edit' attributes, see the API documentation for more related contents.
2) If you want to use drag & drop callback, muse to set 'setting.callback.beforeDrag / onDrag / beforeDrop / onDrop' attributes, see the API documentation for more related contents.
Basic settings: can Copycan Move
Position settings: previnnernext
2, Explanation of treeNode
No special requirements on the node data, the user can add custom attributes.