Is there an example for an request and load, scroll and resize-event

[derSteffen]

Is there an example for an request and load, scroll and resize-event?

I have no idea to start? I want say:
If div.class in the viewport and if this div.class not more in the viewport .... by the scroll and resize and load-Event.

But I want it vor each div with the class xyz.

Thanks very much!