Paul-Martin
commented
8 years ago If I understand the behavior you want, I believe you simply need to specify two way data-link using this syntax:
data-link="{:val:} max{:~max()}"
https://jsfiddle.net/1tpjj1gb/2/
(updated because in my pre coffee answer I added the two way link syntax to max instead of val)
laurensdijkstra
When using a data-linked computed observable as the max attribute of an input of type range the input stops updating the value attribute observably.
The first time one starts manipulating the computed observable max value, the range doesn't respond at all. Only after using the input at least once makes it respond to the computed max attribute. However, the value attribute is still not observably changed.
See https://jsfiddle.net/1tpjj1gb/ for a (contrived) example.