The delete()
method removes the specified element from a WeakSet
object.
Syntax
ws.delete(value);
Parameters
- value
- Required. The object remove from the
WeakSet
object.
Return value
true
if an element in the WeakMap
object has been removed successfully. false
if the key is not found in the WeakMap
or if the key is not an object.
Examples
Using the delete
method
var ws = new WeakSet(); var obj = {}; ws.add(window); ws.delete(obj); // Returns false. No obj found to be deleted. ws.delete(window); // Returns true. Successfully removed. ws.has(window); // Returns false. The window is no longer present in the WeakSet.
Specifications
Specification | Status | Comment |
---|---|---|
ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'WeakSet.prototype.delete' in that specification. |
Standard | Initial definition. |
ECMAScript Latest Draft (ECMA-262) The definition of 'WeakSet.prototype.delete' in that specification. |
Living Standard |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|---|
Basic support | 36 | Yes | 34 | No | 23 | 9 |
Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
---|---|---|---|---|---|---|---|
Basic support | 36 | 36 | Yes | 34 | No | 23 | 9 |
See also
Document Tags and Contributors
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Contributors to this page:
fscholz,
jameshkramer,
kdex,
eduardoboucas,
chrisdavidmills,
realityking,
teoli
Last updated by:
fscholz,