Jquery validation bolerplate (with remote, and message overidding, and different examples)

jqueryValidation_boilerplate.js

/*
jquery validation support remote verification (return true or false) (you can use that to verify uniqueness for example
*/

$(function() {
  $("#form-register").validate({
    rules: {
      fname: {
        required: true
      },
      lname: {
        required: true
      },
      pass: {
        required: true,
        minlength: 10
      },
      pass_confirm: {
        required: true,
        minlength: 10,
        equalTo: "#pass"
      },
      cname: {
        required: true,
        remote: { // <------------------------------------------------------here a remote validation (in this example to check for uniquness otherwise it can be anything)
          url: "{{ route('data.unique') }}",
          type: "post",
          data: {
            _token: "{{ csrf_token() }}"
          }
        }
      },
      email: {
        required: true,
        remote: {
          url: "{{ route('data.unique') }}",
          type: "post",
          data: {
            _token: "{{ csrf_token() }}"
          }
        }
      }
    },
    messages: { // <---------- here how to overide the default messages (for different validation types)
      fname: {
        required: "@lang('auth.validation.first_name_required')"
      },
      lname: {
        required: "@lang('auth.validation.last_name_required')"
      },
      pass: {
        required: "@lang('auth.validation.password_required')",
        minlength: "@lang('auth.validation.password_min_len_10')"
      },
      pass_confirm: {
        required: "@lang('auth.validation.password_confirm_required')",
        minlength: "@lang('auth.validation.password_min_len_10')",
        equalTo: "@lang('auth.validation.password_confirm_non_match')"
      },
      cname: {
        required: "@lang('auth.validation.company_name_required')",
        remote: "@lang('auth.validation.company_name_exist')"
      },
      email: {
        required: "@lang('auth.validation.email_required')",
        remote: "@lang('auth.validation.email_exist')",
        email: "@lang('auth.validation.email_non_valid')"
      }
    }
  });
});

/*
Remote : in jquery validation
email: {
        required: true,
        remote: {
          url: "{{ route('data.unique') }}",
          type: "post",
          data: {
            _token: "{{ csrf_token() }}",
          }
        }
      },
*/

// server side [here php laravel] (the most important thing is that your return true or flase in the end;
public function checkDataUnicity(Request $request){
    $toCheck = $this->extractValueToCheck($request->post());
    $isUnique = true;
    switch ($toCheck) {
      case 'cname':
      $company = $request->post()[$toCheck];
      $isUnique = Company::isUnique($company);
      break;

      case 'email':
      $email = $request->post()[$toCheck];
      $isUnique = User::isUnique($email);
      // $isValidEmail =
      break;

      default:
      # code...
      break;
    }
    echo $isUnique ? 'true' : 'false';  // here we are echo true or false (in the response)
  }