WeakSet.prototype.delete()

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

Returns true if an element in the WeakSet object has been removed successfully; otherwise false.

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

Browser compatibility

See also

• WeakSet
• WeakSet.prototype.clear()