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Joel on Software

input mask

Is it possible for a Web Form text box control to have an input mask? So, for instance, for a phone number field the text box would automatically show (  )  -      We're already using the Regular expression validator to confirm a user is entering data the way we want, but is there any way to help them out with a mask as well?

Matt Bruce
Wednesday, February 04, 2004

You need DHTML to do this. For instance, I have some (really old!) example code on my site:

http://www.youngpup.net/?request=/snippets/client-validation.xml

A number of people have wrapped things like this up into ASP.Net controls, but it outputs essentially the same code.

Aaron Boodman
Wednesday, February 04, 2004

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