WeakSet.prototype.delete()
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 WeakSet
object has been removed
successfully. false
if the value
is not found in
the WeakSet
or if the value
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
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