how to return a json response of validation in laravel

Asked by: Armin21

Validation code

 $this->validate($request, [
            'email'=> 'required|email|unique:users',
            'email'=> 'required|max:120',
            'password' => 'required|min:4'
            ]);

how can i return the errors of validation if they exist as a json response?

Source