Datepicker for LaTeX fillable form

Question

I am replicating a fillable/savable form from LiveCycle with LaTeX using \CheckBox and \TextField items. I would also like to replicate the pop-up calendar / datepicker feature. I am aware of the insDLJS package which sounds like I could program one in JS, but does anyone know of a simpler method?

Answer 1

As mentioned in https://tex.stackexchange.com/a/488757/2388 there is an inbuilt date picker in recent adobe reader. The answer show how to use it with hyperref, so here as an alternative the code for l3pdffield-testphase. Notice that the javascript need an additional parentheses pair.

\DocumentMetadata{}
\documentclass[12pt]{article}
\usepackage{l3pdffield-testphase}


\begin{document}
Pick up a date:
 \ExplSyntaxOn 
 \pdffield_textfield:n
  {
   name      =mydate, 
   format    ={(AFDate_FormatEx("dd.mm.yyyy");)},
   keystroke ={(AFDate_KeystrokeEx("dd.mm.yyyy");)}
  } 
 \ExplSyntaxOff 


\end{document}