The answers given almost worked for me, but the latest version of MVC, JSON.Net, and DNX uses “$ref” and “$id”, and they may be out of order. So I’ve modified user2864740’s answer.
I should note that this code does not handle array references, which are also possible.
function RestoreJsonNetReferences(g) {
var ids = {};
function getIds(s) {
// we care naught about primitives
if (s === null || typeof s !== "object") { return s; }
var id = s['$id'];
if (typeof id != "undefined") {
delete s['$id'];
// either return previously known object, or
// remember this object linking for later
if (ids[id]) {
throw "Duplicate ID " + id + "found.";
}
ids[id] = s;
}
// then, recursively for each key/index, relink the sub-graph
if (s.hasOwnProperty('length')) {
// array or array-like; a different guard may be more appropriate
for (var i = 0; i < s.length; i++) {
getIds(s[i]);
}
} else {
// other objects
for (var p in s) {
if (s.hasOwnProperty(p)) {
getIds(s[p]);
}
}
}
}
function relink(s) {
// we care naught about primitives
if (s === null || typeof s !== "object") { return s; }
var id = s['$ref'];
delete s['$ref'];
// either return previously known object, or
// remember this object linking for later
if (typeof id != "undefined") {
return ids[id];
}
// then, recursively for each key/index, relink the sub-graph
if (s.hasOwnProperty('length')) {
// array or array-like; a different guard may be more appropriate
for (var i = 0; i < s.length; i++) {
s[i] = relink(s[i]);
}
} else {
// other objects
for (var p in s) {
if (s.hasOwnProperty(p)) {
s[p] = relink(s[p]);
}
}
}
return s;
}
getIds(g);
return relink(g);
}