How to get all child node values as a array while parent node is selected in jstree checkbox plugin - jstree

Question

I am working on jstree checkbox plugin and want to get all child node values while parent node is selected.I tried to implement get_checked method but it didn't work.
Below is my code.
<div id="demo"></div>
$('#demo').jstree({
'core' : {
'data' : [
{ "text" : "adya", "children" : [
{ "text" : "id" },
{ "text" : "name"},
{"text":"address"}
]
},
{ "text" : "order", "children" : [
{ "text" : "id" },
{ "text" : "order_name" }
]}
]
},
'checkbox':{'two_state':true,'whole_node':false,'tie_selection':false},
'plugins':['checkbox','themes','ui'] });
a = [];
$('#demo').jstree("get_checked",null,true).each(function()
{ a.push(this.id) });
console.log(a);
Please help me out.

Answer 1

Try this :
jQuery.jstree._reference("#demo")._get_children(parentNode);

Answer 2

I assume that you want to select all the children nodes of a selected parent node.
for this you can use get_children_dom(obj) method (see docs here), here the argument 'obj' is parent's full node object. To get all the selected parent node objects, you can use get_top_selected() method. then for each parent node, you can get their child nodes.
In your code you can do
var parentNodes = $('#demo').jstree().get_top_selected(true);
var selectedChildNodes;
$.each(parentNodes, function(index,value){
selectedChildNodes = $('#demo').jstree().get_children_dom(value);
});