Question

I have JSON data and I was wondering if there was a way to determine the parent object of a nested object. For example, take this structure:

Vehicles[]
 ForSaleCars[]
  Car{}
   Make
   Model
   Year
 SoldCars[]
  Car{}
   Make
   Model
   Year

Assume that this is in var json = ; and has been filled with some data. It is easy to access the second car in the ForSaleCars array like this:

var secondCar = json.Vehicles.ForSaleCars[1];

At this point, solely from the secondCar variable, is it possible to tell it came from ForSaleCars and not SoldCars?

The reason I ask is that I am traversing a json object graph recursively and it would be nice to see which parent the object had without tracking.

Answer 1

At this point, solely from the secondCar variable, is it possible to tell it came from ForSaleCars and not SoldCars?

No. JavaScript doesn’t automatically track where a reference was copied from.