The delete()
method removes the specified element from a WeakSet
object.
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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 |
---|
ECMAScript (ECMA-262) The definition of 'WeakSet.prototype.delete' in that specification. |
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.
Desktop | Mobile | Server | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
delete | Chrome Full support 36 | Edge Full support 12 | Firefox Full support 34 | IE No support No | Opera Full support 23 | Safari Full support 9 | WebView Android Full support 37 | Chrome Android Full support 36 | Firefox Android Full support 34 | Opera Android Full support 24 | Safari iOS Full support 9 | Samsung Internet Android Full support 3.0 | nodejs Full support 0.12 |
Legend
- Full support
- Full support
- No support
- No support