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Title: WeakSet - JavaScript | MDN

Open Graph Title: WeakSet - JavaScript | MDN

Description: A WeakSet is a collection of garbage-collectable values, including objects and non-registered symbols. A value in the WeakSet may only occur once. It is unique in the WeakSet's collection.

Open Graph Description: A WeakSet is a collection of garbage-collectable values, including objects and non-registered symbols. A value in the WeakSet may only occur once. It is unique in the WeakSet's collection.

Opengraph URL: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet

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https://github.com/orgs/mdn/discussions/739
https://developer.mozilla.org/de/docs/Web/JavaScript/Reference/Global_Objects/WeakSet
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet
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Learn more https://developer.mozilla.org/en-US/docs/Glossary/Baseline/Compatibility
See full compatibility https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet#browser_compatibility
non-registered symbolshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol#shared_symbols_in_the_global_symbol_registry
Descriptionhttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet#description
Constructorhttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet#constructor
Instance propertieshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet#instance_properties
Instance methodshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet#instance_methods
Exampleshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet#examples
Specificationshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet#specifications
Browser compatibilityhttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet#browser_compatibility
See alsohttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet#see_also
Descriptionhttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet#description
primitive data typeshttps://developer.mozilla.org/en-US/docs/Glossary/Primitive
non-registered symbolshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol#shared_symbols_in_the_global_symbol_registry
Sethttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set
Sethttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set
Key equalityhttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet#key_equality
SameValueZerohttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Equality_comparisons_and_sameness#same-value-zero_equality
referencehttps://developer.mozilla.org/en-US/docs/Glossary/Object_reference
Constructorhttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet#constructor
WeakSet()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet/WeakSet
Instance propertieshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet#instance_properties
WeakSet.prototype.constructorhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/constructor
WeakSethttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet/WeakSet
WeakSet.prototype[Symbol.toStringTag]https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet#weakset.prototypesymbol.tostringtag
[Symbol.toStringTag]https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol/toStringTag
Object.prototype.toString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toString
Instance methodshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet#instance_methods
WeakSet.prototype.add()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet/add
WeakSet.prototype.delete()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet/delete
WeakSet.prototype.has()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet/has
Exampleshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet#examples
Using the WeakSet objecthttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet#using_the_weakset_object
Detecting circular referenceshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet#detecting_circular_references
Sethttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set
Specificationshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet#specifications
ECMAScript® 2027 Language Specification# sec-weakset-objectshttps://tc39.es/ecma262/multipage/keyed-collections.html#sec-weakset-objects
Browser compatibilityhttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet#browser_compatibility
See alsohttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakSet#see_also
Polyfill of WeakSet in core-jshttps://github.com/zloirock/core-js#weakset
Maphttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map
Sethttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set
WeakMaphttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakMap
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Standard built-in objectshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects
WeakSethttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet
WeakSet()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet/WeakSet
add()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet/add
delete()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet/delete
has()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet/has
Object/Functionhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object
apply()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/apply
bind()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/bind
call()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/call
toString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/toString
[Symbol.hasInstance]()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/Symbol.hasInstance
displayNamehttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/displayName
lengthhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/length
namehttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name
prototypehttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/prototype
argumentshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/arguments
callerhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/caller
__defineGetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__defineGetter__
__defineSetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__defineSetter__
__lookupGetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__lookupGetter__
__lookupSetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__lookupSetter__
hasOwnProperty()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwnProperty
isPrototypeOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/isPrototypeOf
propertyIsEnumerable()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/propertyIsEnumerable
toLocaleString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toLocaleString
toString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toString
valueOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/valueOf
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