Input Validation For "unknown" Field Names

I have a server-side ASP script that dynamically creates an input form from
a database table. The table contains a field name, the table where values
are stored, type of input control, value for a label, etc.

What I need to do is create a JS validation routine that will check each
control for valid input, regardless of what the control name is. If it is a
"select", it needs to verify the index is > 1. If it is an "input", it needs
to check that it isnt't empty, etc.

Using known fields, I usually do something like this (page name is "me.asp":

***** code *****