WeakMap.prototype.set()

Baseline Widely available

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

El método set() añade un nuevo elemento con su key y value específicos al objeto WeakMap.

Pruébalo

const weakmap1 = new WeakMap();
const object1 = {};
const object2 = {};

weakmap1.set(object1, "foo");
weakmap1.set(object2, "bar");

console.log(weakmap1.get(object1));
// Expected output: "foo"

console.log(weakmap1.get(object2));
// Expected output: "bar"

Sintaxis

wm.set(key, value);

Parámetros

indentificador (key)

Requerido. El identificador (objeto) del elemento a añadir al objeto WeakMap.

valor (value)

Requerido. El valor del elemento a añadir al objeto WeakMap.

Valor devuelto

El objeto WeakMap.

Ejemplos

Utilización del método set

js
var wm = new WeakMap();
var obj = {};

// Agregando nuevos elementos a WeakMap
wm.set(obj, "foo").set(window, "bar"); // encadenamiento
// Actualiza el un elemento en el objeto WeakMap
wm.set(obj, "baz");

Especificaciones

Specification
ECMAScript® 2025 Language Specification
# sec-weakmap.prototype.set

Compatibilidad con navegadores

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
set

Legend

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Full support
Full support
See implementation notes.

Vea también