JavaScript and window scroll events

Hello,

I wonder how to register for window scroll events,

I injected JavaScript into my Component
… once by using JavaScript.getCurrent().execute(…)
… and another time by creating a JavaScript extension.

In both cases the JavaSript is loaded and executed and I receive window.click events.
But unfortunately I do not receive any window.scroll events.

Is there any possibility to receive these scroll events?

Best regards,
Wolfgang