Object.getOwnPropertyDescriptor()

The Object.getOwnPropertyDescriptor() static method returns an object describing the configuration of a specific property on a given object (that is, one directly present on an object and not in the object’s prototype chain). The object returned is mutable but mutating it has no effect on the original property’s configuration.

This method permits examination of the precise description of a property. A property in JavaScript consists of either a string-valued name or a Symbol and a property descriptor. Further information about property descriptor types and their attributes can be found in Object.defineProperty().

A property descriptor is a record with some of the following attributes:

Syntax example: Object.getOwnPropertyDescriptor(obj, prop)