Object.getOwnPropertyDescriptor()
Returns the property descriptor for an own property of an object.
Syntax
Object.getOwnPropertyDescriptor(obj, prop) Parameters
| Name | Type | Required | Description |
|---|---|---|---|
obj | object | Yes | The object to inspect. |
prop | string | symbol | Yes | The name of the property whose descriptor is returned. |
Returns
object | undefined — A descriptor object, or undefined if the property does not exist as an own property.
Examples
const o = { a: 1 };
console.log(Object.getOwnPropertyDescriptor(o, 'a'));
Output
{ value: 1, writable: true, enumerable: true, configurable: true }
console.log(Object.getOwnPropertyDescriptor({}, 'x'));
Output
undefined
Notes
Returns either a data descriptor (value/writable) or an accessor descriptor
(get/set). Only inspects own properties, not inherited ones.
Browser & runtime support
| Environment | Since version |
|---|---|
| chrome | 5 |
| firefox | 4 |
| safari | 5 |
| edge | 12 |
| node | 0.10 |