Internal reference mechanic for JSON.

Overloads JSON.parse/stringify.

Builds a dictionary of all objects contained in the to-be-stringified object, with paths for each occurrence. Replaces every occurrence with the string "jref:shortest.path.to.object"

var foo = {name: 'Ed', car: {color:'blue'}};
foo.car.owner = foo; // This creates a circular reference.
JSON.stringify(foo); // Returns "{"name":"Ed","car":{"color":"blue","owner":"jref:this"}}"

Recreates all jref-references, including primitives.

var ed = JSON.parse('{"name":"Ed","car":{"color":"blue","owner":"jref:this","owner_name":"jref:this.name"}}');
console.log(ed.car.owner.car.owner.car.owner); // The outmost object
console.log(ed.car.owner_name); // 'Ed'
ed.car.owner_name = 'Frank';
console.log(ed.name); // 'Frank'