The delete() method of WeakSet instances removes the specified element from this WeakSet.
Syntax
weakSetInstance.delete(value)
Parameters
value- : The value to remove from the
WeakSetobject.
- : The value to remove from the
Return value
true if an element in the WeakSet object has been removed successfully. false if the value is not found in the WeakSet. Always returns false if value is not an object or a non-registered symbol.
Examples
Using the delete() method
const ws = new WeakSet();
const 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.