serialization - Knockoutjs - function inside viewmodel causing undesirable recursion -

in knockout view model have save() function sends jquery post request. inside post request call ko.tojs(this).

whenever call save function browser becomes unresponsive , tells me there's recursion. upon debugging (by using breakpoints), found when call tojs() appears degree of cloning of object, , in doing cloning calls save() function, in turn calls tojs()... , there's recursion.

why happen, , there way avoid without using tojson()?

[i have question regarding tojson, , explains why don't want use it.]

for sake of completeness, here view model.

function vmdictionary(dict) {      if (dict === null || dict === undefined) {         return;     }      var self = this;      // directly-assigned variables     self.concepts = new vmconcepts(dict.concepts);     self.deleted = ko.observable(dict.deleted);     self.description = ko.observable(dict.description);     self.includeinsearch = ko.observable(true);     self.id = ko.observable(dict.id);     self.languages = ko.observablearray(dict.languages);     self.lastupdate = new vmchangerecord(dict.lastupdate);     self.name = ko.observable(dict.name);     self.public = ko.observable(dict.public);      self.templatename = function(observable, bindingcontext) {         return "dictionary-template";     };      // computed variables     self.publictext = ko.computed(function() {         return sp.utils.localize(self.public             ? "public"             : "private");     });      // exposed functions     self.save = function () {         $.ajax({             data: ko.tojson(self),             datatype: "json",             type: "post",             url: [...],             statuscode: {                 200: function (response) {                     console.log(response);                 }             },             error: function (xmlhttprequest, textstatus, errorthrown) {                 console.log(xmlhttprequest);                 console.log(textstatus);                 console.log(errorthrown);             }         });     }; } 

update: added entire view model (above).

you must doing wrong, works in little fiddle me

http://jsfiddle.net/brn9s/

viewmodel = function() {     this.somedata = ko.observable("test");     this.dto = ko.observable(); };  viewmodel.prototype = {     save: function() {         this.dto(ko.tojs(this));             } };  var viewmodel = new viewmodel(); ko.applybindings(viewmodel); viewmodel.save();