У вас уже есть идентификатор дерева, вы можете просто добавить к нему класс и заставить его работать.
$("#ajson2").addClass("children-group-wrapper")
var treeData = [{
"id": "ajson1",
"parent": "#",
"text": "Simple root node",
},
{
"id": "ajson2",
"parent": "#",
"text": "Root node 2",
}
];
var childrenGroup = [{
"id": "ajson3",
"parent": "ajson2",
"text": "Group Child 1",
children: false,
"icon": "fa fa-file-o"
},
{
"id": "ajson4",
"parent": "ajson2",
"text": "Group Child 2",
children: false,
"icon": "fa fa-file-o"
}
];
var myTree = $('#using_json_2').jstree({
'core': {
"check_callback": true,
'data': treeData // Use it here
}
});
myTree.on('changed.jstree', function(e, data) {
childrenGroup.forEach(function(obj) {
$('#using_json_2').jstree().create_node('ajson2', obj, "last");
});
$('#using_json_2').jstree().open_node('ajson2');
$("#ajson2").addClass("children-group-wrapper")
});
.children-group-wrapper {
border: 1px solid orange;
}
<link href="https://cdnjs.cloudflare.com/ajax/libs/jstree/3.2.1/themes/default/style.min.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jstree/3.2.1/jstree.min.js"></script>
<div id="using_json_2"></div>
Если вы хотите применить класс к li, вы можете использовать новое поддерживаемое свойство jstree
"li_attr": {
"class": "children-group-wrapper"
}
Это будетдобавить атрибут класса в li.
РЕДАКТИРОВАТЬ:
var treeData = [{
"id": "ajson1",
"parent": "#",
"text": "Simple root node"
},
{
"id": "ajson2",
"parent": "#",
"text": "Root node 2"
}
];
var childrenGroup = [{
"id": "ajson3",
"parent": "ajson2",
"text": "Group Child 1",
children: false,
"icon": "fa fa-file-o",
groupClass: 'children-group-wrapper1',
"li_attr": {
"class": "children-group-wrapperOpen"
}
},
{
"id": "ajson4",
"parent": "ajson2",
"text": "Group Child 2",
children: false,
"icon": "fa fa-file-o",
groupClass: 'children-group-wrapper1',
"li_attr": {
"class": "children-group-wrapperClosed"
}
},
{
"id": "ajson5",
"parent": "ajson2",
"text": "2nd Group Child 1",
children: false,
"icon": "fa fa-file-o",
"li_attr": {
"class": "children-group-wrapper1Open"
}
},
{
"id": "ajson6",
"parent": "ajson2",
"text": "2nd Group Child 2",
children: false,
"icon": "fa fa-file-o",
"li_attr": {
"class": "children-group-wrapper1Closed"
}
}
];
var myTree = $('#using_json_2').jstree({
'core': {
"check_callback": true,
'data': treeData // Use it here
}
});
myTree.on('changed.jstree', function(e, data) {
childrenGroup.forEach(function(obj) {
$('#using_json_2').jstree().create_node('ajson2', obj, "last");
});
$('#using_json_2').jstree().open_node('ajson2');
});
.children-group-wrapperOpen {
border: 1px solid orange;
border-bottom: 0px;
}
.children-group-wrapperClosed {
border: 1px solid orange;
border-top: 0px;
}
.children-group-wrapper1Open {
border: 1px solid red;
border-bottom: 0px;
}
.children-group-wrapper1Closed {
border: 1px solid red;
border-top: 0px;
}
<link href="https://cdnjs.cloudflare.com/ajax/libs/jstree/3.2.1/themes/default/style.min.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jstree/3.2.1/jstree.min.js"></script>
<div id="using_json_2"></div>