WeakSet add() JavaScript JS
The WeakSet add() method adds a new element to the end of a WeakSet object. Syntax: weakSetObj.add(value) Parameters: value: It represents the element to add. Returns: Updated WeakSet object. Example: <!DOCTYPE html> <html> <body> <script> var hello = new WeakSet(); var obj={}; hello.add(obj); document.writeln(hello.has(obj)); </script> </body> </html>