How do I do form validation with JavaScript?

Being able to check a whether a form's input has been filled before processing the data is a very useful (and often vital) ability. Check out the resources below for informaion on how to do this with client-side code):

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Relevant FAQs:

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Emperor

(Added by: Emperor on Sat 14-Sep-2002)

(Edited by: Emperor on Sat 14-Sep-2002)