Could you please give me the list of parameters of this function and an example of usage
$('#treepanel').jstree("create_node");
IMHO jsTree is powerful, but documentation could be improved.
The create_node function is documented here.
Be careful not interpreting the [] as a literal. They are just to indicate that the parameters are optional.
This works for jsTree version "pre 1.0 fixed":
var position = 'inside';
var parent = $('#your-tree').jstree('get_selected');
var newNode = { state: "open", data: "New nooooode!" };
$('#your-tree').jstree(
"create_node", parent, position, newNode, false, false);
JSTree 3.3.5
From their docs "create_node" functionality has inverted args 'newNode' and 'position'
$('#your-tree').jstree("create_node", parent, newNode, position, false, false);
https://www.jstree.com/api/#/?f=create_node([par,%20node,%20pos,%20callback,%20is_loaded])