necessary to do js and server side validations before retrieving values?

Hi

Please could you let me know what you normally do re form validation. I am currently validating a form using javascript. This checks empty fields and that email is correct. Do I also need to do these checks server side? Does anyone have a good link to info on server side validation ie. empty fields, data type, email a valid email etc?

Thanks!
Lee

For myself, I look at client-side js as an annoyance-preventer to catch obvious problems prior to another server trip.

I validate all data going into a database with server-side validation code. I have a VBS class that I use to validate each data element while generating a SQL string and write specific functions when needed for additional validation of data ranges & such.

Search google for some of your specific validation requirements, usually someone has already done what you need