The NativeScript site says that I can use their cross-platform wrappers like Button, which delegates to UIButton on iOS and android.whatever.Button on Android.

The NativeScript site says that I can use their cross-platform wrappers like Button, which delegates to UIButton on iOS and android.whatever.Button on Android. So far, so good. But suppose I now want to invoke some method on Button that exists only on iOS. Can I do that? If not, it's the least-common-denominator, which I'm not interested in using to build an app. I'm thinking about something like: var button = new Button(...); // Set the common properties: button.backgroundColor = ...; button.text = ...; if (iOS) { // Set iOS-specific properties } else { // Set Android-specific properties }