jquery datepicker missing (wordpress) after updating to 5.26 from 4.6.33?
Never mind - all working now.
I modified the CiviCRM Resource URL from the default that was in there of [civicrm.root]
to be the full URL http://example.com/wp-content/plugins/civicrm/civicrm and the choice of 'Choose Date Range' showed up in the drop down giving the functionality needed.
Or it is entirely possible that Choose Date Range was there the whole time and I just missed it.  Been such a slog of updating this ancient site that that is entirely possible.
Strangely, that jquery error is still showing up in the console, though.  But I will look at that tomorrow.