Is it possible to determine if an object created with Object.create inherits from Array in JavaScript?

Question

Identifying which objects are which is complicated in JavaScript, and figuring out which objects are arrays has something of a hacky solution. Fortunately, it manages to wor

Answer 1

See http://perfectionkills.com/how-ecmascript-5-still-does-not-allow-to-subclass-an-array/ for the definitive exposition of the problems in inheriting from Array.

Anyway, in the simplest case, where you are doing

var sort_of_an_array = Object.create(Array.prototype);

you can check using isPrototypeOf:

Array.prototype.isPrototypeOf(sort_of_an_array)

See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/isPrototypeOf.