WeakMap.prototype.delete()

O método delete() remover o elemento especificado ou setado a partir de um objeto instanciado do WeakMap.

Sintaxe

wm.delete(key);

Parâmetros

chave(key)
Requerido. A chave(key) do elemento a ser removido do objeto instanciado do WeakMap.

Valores retornados

true se o emento do objeto do WeakMap tenha sido removido com sucesso. false se a chave(key) não for encontrada no WeakMap ou se a chave(key) não for um objeto.

Examplos

Usando o método delete 

var wm = new WeakMap();
wm.set(window, 'foo');

console.log(wm.delete(window)); // Returna true. Removido com sucesso.

wm.has(window);    // Returna false. O objeto window não é mais pertecente ao WeakMap.

Especificações

Especificação Status Comentário
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'WeakMap.prototype.delete' in that specification.		 Padrão Definição inicial
ECMAScript Latest Draft (ECMA-262)
The definition of 'WeakMap.prototype.delete' in that specification.		 Rascunho  

Compatibilidade com os navegadores

Update compatibility data on GitHub
DesktopMobileServer
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung InternetNode.js
deleteChrome Full support 36Edge Full support 12Firefox Full support 6
Notes
Full support 6
Notes
Notes Prior to Firefox 38, this method threw a TypeError when the key parameter was not an object. This has been fixed in version 38 and later to return false as per the ES2015 standard.
IE Full support 11Opera Full support 23Safari Full support 8WebView Android Full support 37Chrome Android Full support 36Firefox Android Full support 6
Notes
Full support 6
Notes
Notes Prior to Firefox 38, this method threw a TypeError when the key parameter was not an object. This has been fixed in version 38 and later to return false as per the ES2015 standard.
Opera Android Full support 24Safari iOS Full support 8Samsung Internet Android Full support 3.0nodejs Full support 0.12
Full support 0.12
Full support 0.10
Disabled
Disabled From version 0.10: this feature is behind the --harmony runtime flag.

Legend

Full support  
Full support
See implementation notes.
See implementation notes.
User must explicitly enable this feature.
User must explicitly enable this feature.

Ver também

Tópicos relacionados
  1. Standard built-in objects
  2. WeakMap
  3. Propriedades
    1. WeakMap.prototype
  4. Métodos
    1. WeakMap.prototype.clear() [Traduzir]
    2. WeakMap.prototype.delete()
    3. WeakMap.prototype.get()
    4. WeakMap.prototype.has()
    5. WeakMap.prototype.set()
  5. Herança:
  6. Function
  7. Propriedades
    1. Function.arguments
    2. Function.arity
    3. Function.caller
    4. Function.displayName
    5. Function.length
    6. Function.name
    7. Function.prototype
  8. Métodos
    1. Function.prototype.apply()
    2. Function.prototype.bind()
    3. Function.prototype.call()
    4. Function.prototype.isGenerator()
    5. Function.prototype.toSource()
    6. Function.prototype.toString()
  9. Object
  10. Propriedades
    1. Object.prototype.__count__
    2. Object.prototype.__noSuchMethod__ [Traduzir]
    3. Object.prototype.__parent__ [Traduzir]
    4. Object.prototype.__proto__
    5. Object.prototype.constructor
  11. Métodos
    1. Object.prototype.__defineGetter__()
    2. Object.prototype.__defineSetter__() [Traduzir]
    3. Object.prototype.__lookupGetter__()
    4. Object.prototype.__lookupSetter__() [Traduzir]
    5. Object.prototype.hasOwnProperty()
    6. Object.prototype.isPrototypeOf()
    7. Object.prototype.propertyIsEnumerable() [Traduzir]
    8. Object.prototype.toLocaleString() [Traduzir]
    9. Object.prototype.toSource() [Traduzir]
    10. Object.prototype.toString()
    11. Object.prototype.unwatch() [Traduzir]
    12. Object.prototype.valueOf()
    13. Object.prototype.watch() [Traduzir]
    14. Object.setPrototypeOf()