Prototype.js 1.6.x toJSON misbehaves

Question

In Prototype.js 1.6.x try and do

Object.toJSON([{"nodeType":1}])

it should yield

'[{"nodeType":1}]'

as the output string. However it yields '[]'. It appears to skip objects that have nodeType==1. It has something to do with them being DOM elements. Is there a work around to get the correct output?

jsFiddle: http://jsfiddle.net/xPVnr/

EDIT:

Looking at the source it appears toJSON just returns if isElement(obj) is true which is in turn true if obj.nodeType == 1 :(

Answer 1

Use JSON.stringify but with following tweak to get correct output (in case of Arrays):

var _json_stringify = JSON.stringify;
JSON.stringify = function(value) {
    var _array_tojson = Array.prototype.toJSON;
    delete Array.prototype.toJSON;
    var r=_json_stringify(value);
    Array.prototype.toJSON = _array_tojson;
    return r;
};

This takes care of the Array toJSON incompatibility with JSON.stringify and also retains toJSON functionality as other Prototype libraries may depend on it.