It's actually sender.get_selectionStart() and sender.get_selectionEnd(), where sender is the slider. Unfortunately, this gives me the position rather than the actual value :(
Hello Peter Zolja,
We already have the task to update the documentation of the RadSlider control with those methods. We will do our best to complete this task for SP2, scheduled for the middle of January.
Kind regards,
Tsvetie
the Telerik team
Check out Telerik Trainer, the state of the art learning tool for Telerik products.