Object.getOwnPropertyNames

Returns the names of the own properties of an object.

The own properties of an object are those that are defined directly on that object, and are not inherited from the object’s prototype.

Syntax

getOwnPropertyNames(object)

Parameters

• object

  An object

Return value

An array of strings that represent all the enumerable properties of the given object.

Examples

let vehicle = {
  speed: 10,
  unit: "km/h",
}

let car = Object.create(vehicle, {
  stop: {
    value: function() {
      this.speed = 0
    },
    enumerable: true,
    writable: true,
    configurable: true
  }
})

print("vehicle: ", Object.getOwnPropertyNames(vehicle))
print("car: ", Object.getOwnPropertyNames(car))

vehicle:  ["speed", "unit"]
car:  ["stop"]