JavaScript Object.getOwnPropertyNames()

Definition and usage

Object.getOwnPropertyNames() The method returns an array containing all property names of the object.

Object.getOwnPropertyNames() The method does not change the original object.

Related methods:

Object.defineProperty() Add or modify properties.

Object.defineProperties() Add or modify multiple properties.

Object.getOwnPropertyNames() Returns all property names of the object.

Object.getOwnPropertyDescriptor() Returns the descriptor of the property.

Object.getOwnPropertyDescriptors() Returns the descriptors of all properties of the object.

Instance

// Create an object
const person = {
  firstName: "Bill",
  lastName: "Gates",
  age: 50,
  eyeColor: "blue"
};
// Get all property names
let props = Object.getOwnPropertyNames(person);

Try it yourself

Syntax

Object.getOwnPropertyNames(object)

Parameter

Return value

Browser support

Object.getOwnPropertyNames() Is a feature of ECMAScript5 (ES5).

Since July 2013, all modern browsers have fully supported ES5 (JavaScript 2009):