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Object.getPrototypeOf()

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since julio de 2015.

Resumen

El método Object.getPrototypeOf() devuelve el prototipo (es decir, el valor de la propiedad interna [[Prototype]]) del objeto especificado.

In this article

Sintaxis

Object.getPrototypeOf(obj)

Parámetros

obj

El objeto cuyo prototipo va a ser devuelto.

Valor Devuelto

El prototipo del objeto dado. Si no existen propiedades heredadas se devolverá null.

Ejemplos

js
var proto = {}; var obj = Object.create(proto); Object.getPrototypeOf(obj) === proto; // true

Notas

En ES5, lanzará una excepción TypeError si el parámetro obj no es un objeto. en ES6, El parámetro será forzado a un Object.

js
> Object.getPrototypeOf('foo') TypeError: "foo" is not an object // ES5 code > Object.getPrototypeOf('foo') String.prototype // ES6 code

Especificaciones

Specification
ECMAScript® 2027 Language Specification
# sec-object.getprototypeof

Compatibilidad con navegadores

Enable JavaScript to view this browser compatibility table.

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  1. Objetos globales
  2. Object
  3. Constructor
    1. Constructor Object()
  4. Métodos estáticos
    1. Object.assign()
    2. Object.create()
    3. Object.defineProperties()
    4. Object.defineProperty()
    5. Object.entries()
    6. Object.freeze()
    7. Object.fromEntries()
    8. Object.getOwnPropertyDescriptor()
    9. Object.getOwnPropertyDescriptors()
    10. Object.getOwnPropertyNames()
    11. Object.getOwnPropertySymbols()
    12. Object.getPrototypeOf()
    13. groupBy()
    14. Object.hasOwn()
    15. Object.is()
    16. Object.isExtensible()
    17. Object.isFrozen()
    18. Object.isSealed()
    19. Object.keys()
    20. Object.preventExtensions()
    21. Object.seal()
    22. Object.setPrototypeOf()
    23. Object.values()
  5. Métodos de instancia
    1. Object.prototype.__defineGetter__()
    2. __defineSetter__()
    3. __lookupGetter__()
    4. __lookupSetter__()
    5. Object.prototype.hasOwnProperty()
    6. Object.prototype.isPrototypeOf()
    7. Object.prototype.propertyIsEnumerable()
    8. Object.prototype.toLocaleString()
    9. Object.prototype.toString()
    10. Object.prototype.valueOf()
  6. Propiedades de instancia
    1. Object.prototype.__proto__
    2. Object.prototype.constructor
  7. Herencia
  8. Object/Function
  9. Métodos estáticos
    1. Function.prototype.apply()
    2. Function.prototype.bind()
    3. Function.prototype.call()
    4. Function.prototype.toString()
    5. [Symbol.hasInstance]()
  10. Propiedades estáticas
    1. Function.displayName
    2. Function.length
    3. Function.name
    4. prototype
    5. Function.prototype.arguments
    6. Function.caller
  11. Métodos de instancia
    1. Object.prototype.__defineGetter__()
    2. __defineSetter__()
    3. __lookupGetter__()
    4. __lookupSetter__()
    5. Object.prototype.hasOwnProperty()
    6. Object.prototype.isPrototypeOf()
    7. Object.prototype.propertyIsEnumerable()
    8. Object.prototype.toLocaleString()
    9. Object.prototype.toString()
    10. Object.prototype.valueOf()
  12. Propiedades de instancia
    1. Object.prototype.__proto__
    2. Object.prototype.constructor

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