[ Web Proxy ]
URL:
Viewing: https://developer.mozilla.org/es/docs/Web/JavaScript/Reference/Global_Objects/Map/Map [Back]  [Original]
Map() constructor - JavaScript | MDN
HTML

HTML: Markup language

HTML reference
HTML guides
Markup languages
CSS

CSS: Styling language

CSS reference
CSS guides
Layout cookbook
JavaScriptJS

JavaScript: Scripting language

JS reference
JS guides
Web APIs

Web APIs: Programming interfaces

Web API reference
Web API guides
All

All web technology

Technologies
Topics
Learn

Learn web development

Frontend developer course
Learn HTML
Learn CSS
Learn JavaScript
Tools

Discover our tools

About

Get to know MDN better

Blog
Toggle sidebar
  1. Tecnologa web para desarrolladores
  2. JavaScript
  3. Referencia de JavaScript
  4. Objetos globales
  5. Map
  6. Map() constructor
Theme
  • OS default
  • Light
  • Dark
Espaol
Remember language Learn more

Esta pgina ha sido traducida del ingls por la comunidad. Aprende ms y nete a la comunidad de MDN Web Docs.

View in English Always switch to English

Map() constructor

Baseline Widely available

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

El constructor Map() crea objetos de tipo Map.

In this article

Sintaxis

js
new Map()
new Map(iterable)

Nota: Map() slo puede ser construido con la palabra clave new. Intentar llamaro sin la palabra clave new arroja un TypeError.

Parametros

iterable Opcional

Un objeto Array u otro objeto iterable cuyos elementos sean tuplas llave-valor. (Por ejemplo, arreglos con dos elementos, tales como [[ 1, 'one' ],[ 2, 'two' ]].) Cada tupla llave-valor es agregada al nuevo objeto Map.

Ejemplos

Creando un nuevo objeto Map

js
const myMap = new Map([
  [1, "one"],
  [2, "two"],
  [3, "three"],
]);

Especificaciones

Specification
ECMAScript 2027 LanguageSpecification
# sec-map-constructor

Compatibilidad con navegadores

Vase tambin

Help improve MDN

Was this page helpful to you?
Yes No
Learn how to contribute

This page was last modified on 21 jul 2025 by MDN contributors.

View this page on GitHub Report a problem with this content
Clear filter input
  1. Objetos globales
  2. Map
  3. Constructor
    1. Map() constructor
  4. Mtodos estticos
    1. Map.groupBy()
  5. Propiedades estticas
    1. Map[Symbol.species]
  6. Mtodos de instancia
    1. Map.prototype.clear()
    2. Map.prototype.delete()
    3. Map.prototype.entries()
    4. Map.prototype.forEach()
    5. Map.prototype.get()
    6. getOrInsert()
    7. getOrInsertComputed()
    8. Map.prototype.has()
    9. Map.prototype.keys()
    10. Map.prototype.set()
    11. Map.prototype.values()
    12. Map.prototype[Symbol.iterator]()
  7. Propiedades de instancia
    1. Map.prototype.size
  8. Herencia
  9. Object/Function
  10. Mtodos estticos
    1. Function.prototype.apply()
    2. Function.prototype.bind()
    3. Function.prototype.call()
    4. Function.prototype.toString()
    5. [Symbol.hasInstance]()
  11. Propiedades estticas
    1. Function.displayName
    2. Function.length
    3. Function.name
    4. prototype
    5. Function.prototype.arguments
    6. Function.caller
  12. Mtodos 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()
  13. Propiedades de instancia
    1. Object.prototype.__proto__
    2. Object.prototype.constructor
MDN

Your blueprint for a better internet.

MDN
Contribute
Developers
Mozilla

Portions of this content are 19982026 by individual mozilla.org contributors. Content available under a Creative Commons license.

Web Proxy Viewer  |  New URL  |  Original Page