Can I use jsTree preloaded with JSON data and also use Ajax - json

Question

I have jsTree working with JSON data: the JSON data represents the server's file system, and the user can select a folder from the tree, which is then added to the folder input field). I don't want the page to load without the top three levels of the file system provided. However, I don't parse the whole file system because that would take too long.
Can I pre-populate jsTree with JSON data and use Ajax when the user opens nodes further down the tree which were not pre-populated, or do I have to use Ajax for the initial load as well?
Below I show my current code (without any Ajax), but only retrieving data down to one level for the sake of brevity: it returns C:\ and E:\ file systems from the server. This works, but I'm unclear how to introduce Ajax to this when the user tries to open a node further down the hierarchy.
<label for="folder">Selected Folder</label>
<input type="text" name="folder" id="folder">
<br>
<script type="text/javascript">
function createJSTree(jsondata)
{
$('#jstree').jstree(
{
"plugins" : ["themes","html_data","ui","cookie"],
'core':
{
'data': jsondata
}
}
)
.bind("select_node.jstree",
function (e, data)
{
var objNode = data.instance.get_node(data.selected);
document.getElementById('folder').value=objNode.id;
}
)
;
}
$(function() { var jsondata ={"text":"pclaptop","children":[{"id":"C:\\","text":"C:\\","children":[]},{"id":"E:\\","text":"E:\\","children":[]}]}; createJSTree(jsondata); })
</script>

Answer 1

Before I get into the ajax piece of the code I had to set the check_callback parameter in jsTree it enables editing of the jsTree. Next, I call `$('#jstree').jstree().create_node('#', parsedData, "last"); in the success method of jQuery's ajax call, and that did the trick. My solution is below:
index.html
<label for="folder">Selected Folder</label>
<input type="text" name="folder" id="folder">
<br>
<button id="create-node-button">
Create Node
</button>
<div id="jstree"></div>
<script type="text/javascript">
function createJSTree(jsondata) {
$('#jstree').jstree({
"plugins": ["themes", "html_data", "ui", "cookie"],
'core': {
'check_callback': true,
'data': jsondata
}
})
.bind("select_node.jstree",
function(e, data) {
var objNode = data.instance.get_node(data.selected);
document.getElementById('folder').value = objNode.id;
}
);
}
$(function() {
var jsondata = [{
"id": "pclaptop",
"parent": "#",
"text": "pclaptop"
},
{
"id": "C:\\",
"parent": "pclaptop",
"text": "C:\\"
},
{
"id": "E:\\",
"parent": "pclaptop",
"text": "E:\\"
},
{
"id": "F:\\",
"parent": "pclaptop",
"text": "F:\\"
}
];
createJSTree(jsondata);
$("#create-node-button").on("click", function() {
$.ajax({
url: "./data.json",
success: function(data){
var parsedData = JSON.parse(data);
$('#jstree').jstree().create_node('#', parsedData, "last");
}
});
});
});
</script>
data.json
{ "id" : "ajson5", "text" : "newly added" }
Lastly, here is a fiddle . I wasn't sure of how to properly set up the ajax call in jsfiddle so I did it locally instead.