I knocked together a little widget that allows for selecting multiple days of the week.
I spent a fair bit of time on the weekend tweaking a Token Input widget.
I really like the way I show/hide the editing field, using no JS at all. That’s not to say there isn’t quite a bit of JS, but I am happy to say it’s using no jQuery, Knockout or anything else.
Indeed, I first wrote it in Knockout, but I think this one is actually simpler (and has some behaviour I wasn’t able to obtain with my Knockout models).