Save/Export changes from JSON sourced Tree

[NR-COSR]

Hello,
I'm working on a project where we're building a tree of objects. Currently the objects are stored in a flat table and I've written some code to turn the flat table into a JSON file. Using the fancytree code I'm able to load the JSON file into a visual tree. Using the drag and drop extension I'm able to allow others to make changes if a specific object should be in a different place.
Where I get stuck is how to get that data back so I can update the source list. Since it is all javascript I'm reasonably certain I can't have the source JSON file be modified without getting into node.js or other technologies which aren't viable.
But I'd be perfectly happy with an export/download. Once they made their changes they could hit a "Save" button and save the .json file to their computer and give that to me. Does something like this already exist in the package and I just missed it?
My JS skills are not up to competently reading the code and creating an export.
Does this qualify as a feature request? Or a hole in my understanding?
Thank you for your help.

[mar10]

Hi,
storing data to a file is out of scope for Fancytree, but you can call tree.toDict() to retrieve the data, and then maybe JSON.stringify().
An example how to create might be found here: https://stackoverflow.com/a/19230668

As an alternative you could use a WebDAV server that would allow to store files using a simple POST request (e.g. WsgiDAV or others)

[NR-COSR]

So here is what I did, I'm writing so if someone else finds this it might help them.
I added a button to "save the changes"
<button id="prepare"> SaveChanges</button>
And then I added some code that looks like this
$("#prepare").click(function () { var tempTree = $.ui.fancytree.getTree("#tree2").toDict(); treeGlobal = JSON.stringify(tempTree); });
The treeGlobal variable I declared at the top of my my <script> section along with a variable to store the date.
var treeGlobal = {}; var globalToday = new Date(); var globalDate = globalToday.getFullYear() + '-' + (globalToday.getMonth() + 1) + '-' + globalToday.getDate();
And then once the tree has been converted to a string I used the fileSaver library
<script type="text/javascript" src="../src/FileSaver.min.js"></script>
Then I called that using the old "onclick" button method
<button id="download" onclick="exportJSONTree(treeGlobal)"> DownloadJSON</button>
function exportJSONTree(JSONTree) { window.saveAs(new Blob([JSONTree], { type: "application/json;charset=utf-8" }), globalDate + '_' + 'tree.json'); };