The form used by the BOIR, (Beneficial Owner Information Report), which was supposed to be mandatory for all businesses in the US, uses some kind of scripting, which I suspect is JS. I had to spin up a Windows machine on Virtual Box to get the right version of Adobe Acrobat to fill it in, as Adobe dropped support for Linux years ago. Why the CFPB didn't just create an SPA or a web form for this is a mystery to me.

The BOIR is an important tool for helping investigate money laundering. Its constitutionally is in doubt, apparently by people who think money laundering is a good thing.

I knew someone once, in the middle eighties, who got hired, got laid off with 6 weeks severance pay a week into his tenure there, got hired a second time a week later and got fired a second time, again with severance pay. This last time it seemed to have stuck. In the first two cases the companies folded.