JavaScript getPrototypeOf() method
The Javascript handler getPrototypeOf() method traps for the internal method. Syntax: getPrototypeOf(target) Parameters: target: It represents the target object. Return: An object or null. Example: <!DOCTYPE html> <html> <body> <script> var handler = {}; var arr = new Proxy(handler, { getPrototypeOf(arg) { return Array.prototype; } }); document.write( arr instanceof Array ); </script> </body> </html>