https://www.julenstraditioner.se/wp-content/plugins/cp-easy-form-builder/js/jQuery.stringify.js?ver=6.7.9

1jQuery(function(){
2(function($) {
3$.extend({
4    
5    stringifyXX  : function stringifyXX(obj) {
6        encodeParam  = function(param,urlp) {
7            if (urlp)
8            {
9                param = param.replace(/&/g, "%26");
10                return encodeURI(param);
11            }
12            else
13                return param;
14        }
15        enc  = function(param) {
16            param = param.replace(/\\/g, "\\\\");
17            param = param.replace(/\"/g, "\\\"");
18            
19            return param;
20        }
21        var t = typeof (obj);
22        if (t != "object" || obj === null) {
23            // simple data type
24            if (t == "string") obj = '"' + obj + '"';
25            return encodeParam(String(obj));
26        } else {
27            // recurse array or object
28            var n, v, json = [], arr = (obj && obj.constructor == Array);
29
30            for (n in obj) {
31                //alert(n+"-----------"+obj[n]);
32                v = obj[n];
33                t = typeof(v);
34                if (t!="function")
35                //if (obj.hasOwnProperty(n)) 
36                {
37                    if (t == "string") v = '"' + enc(v) + '"'; else if (t == "object" && v !== null) v = $.stringifyXX(v);
38                    json.push((arr ? "" : '"' + n + '":') + String(v));
39                }
40            }
41            return encodeParam(arr ? "[" : "{") + String(json) + (arr ? "]" : "}");
42        }
43    }
44});
45})(jQuery);
46});