JavaScript | weakSet.delete() with Example
The weakSet.delete() is an inbuilt function in JavaScript which is used to delete an specific element from a weakSet object.
Syntax:
weakSet.delete(A);
Parameters: It accepts a parameter “A” which is a value going to be deleted from the weakset object.
Return Values: It returns true if the element has been removed successfully from the weakset object and false if the element has not been removed successfully or the element is not found in the weakset.
Code #1:
<script> // Constructing weakSet() object const A = new WeakSet(); // Creating a new element const B = {}; // Adding the element to the weakset object A.add(B); // Testing whether the element has been // set into the weakset object or not document.write(A.has(B) +"<br>"); // Deleting B form the weakSet() object A.delete(B); // Testing whether the element "B" has been deleted or not document.write(A.has(B) +"<br>"); </script> |
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Output:
true false
Here output is true at first it means that element “B” has been set into the weakSet object successfully and after it false which says that the element “B” has been deleted successfully from the weakSet object.
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