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Editorial Team
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Asked: 2026-05-25T11:59:01+00:00

How can I modify ajax response before jsTree creation? I would like to access

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How can I modify ajax response before jsTree creation? I would like to access each node ID and add prefix to it. On jsTree page the only clue is this: the function will receive two arguments – the node being loaded & a function”. I need to do that before the tree is actually created, to avoid duplicate ID in the document. 

"json_data" : {
"ajax" : { 
  "type": "GET", 
  "url" : "tree.json" 
 }, 
"data" : function(node, func){
        //how to use that? 
}}

I have expected to get JSON data here, modify it and return? But this will explode.

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1 Answer

  1. Editorial Team

    I have successfully manipulated data using the success callback in the instantiation of the jsTree. In my case, I am parsing XML data returned as JSON from a .NET webmethod. It should work for your case in a similar manner.

    "ajax": {
  "type": "GET"
  "url": "tree.json",
  "success": function (x) {
    //manipulate string x to change id's here
    return x;
  }, ...

    Another method is to use the “complete” callback function to manipulate the jsTree in its final form. I don’t recommend it in your case of duplicate id’s, however.

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