this is a rather old question, but when I searched for my a solution for my own problem, I found this unanswered thread. So I'll use it once again.
I'm using sliders representing months, one as starting point, one as end point. This is working fine in the desktop client:
Now the same slider in the web application has a tooltip showing numeric values:
How I can I display the slider tooltip to show Months in the tooltip? And is there a way to let the slider only "jump" from Sep to Okt and to Nov (only three positions) and not for each and every day?