Thanks to contributors on google+ and stackoverflow I now have a google
spreadsheet with a script and a form attached, with which the club's
newsletter editor can export items from the club's calendar and get
them nicely formatted in the spreadsheet, ready for further editing and
printing to a PDF file for distribution to the club members. The editor
can fill in the form to specify the starting and ending dates, and the
script does the rest.
But I would rather use datepicker so s/he can select the starting
and ending months to fetch from the calendar as soon as the
spreadsheet opens, driven by the function "onOpen".
I have found many examples of how to tweak datepicker to offer
different date formats, but I have not been able to find any example
that shows how to get the selected date back from the file created by
google's HTML Service into a variable in the script file,
"Code.gs". It seems everybody knows how to get variables
back from the HTML file into the script code, so they don't write
about it. But I'm stumped.
Can you please point me to any documentation on how to do that.