generic handler - Pass fancytree data as JSON data -

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i want pass data fancytree generic handler can save future use.

if use code:

function savetree() {     var tree = $('#toptree').fancytree("gettree");     $.ajax({         cache: false,         url: "savetree.ashx",         data: { 'treedata': tree },         contenttype: "application/json; charset=utf-8"     }); }

then following error jquery.js:

javascript runtime error: argument not optional

i have tried:

var tree = $('#toptree').fancytree("gettree").rootnode.children;

this gives same error. understand because 'tree' not json. how can convert data json object?

edit:

if use code:

function savetree() {     var data = [];     var tree = $('#toptree').fancytree("gettree").rootnode.children;     (var = 0; < tree.length; i++) {         data.push(tree[i].title)     }     data = json.parse(json.stringify(data))     $.ajax({         cache: false,         url: "savetree.ashx",         data: { 'treedata': data },         contenttype: "application/json; charset=utf-8"     }); }

i can accomplish need, there not built-in function in fancytree?

okay, don't know lot fancytree; however, did investigation , found page http://wwwendt.de/tech/fancytree/demo/sample-api.html.

try tree.todict() option see if you're looking for.

this source code.

  // convert whole tree dictionary   var tree = $("#tree").fancytree("gettree");   var d = tree.todict(true);   alert(json.stringify(d));

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