Restricting numbers and symbols from Name text fields

[Anonymous]

I'd like to block any numbers or symbols from the first and last name text fields on our forms, as well as certain text, such as using "first" or "last" as a name -- has anyone successfully implemented these restrictions?

Thanks!

[Anonymous]

Hi Joe

My solution is Using forms2.0 embed code and customize these codes.
http://developers.marketo.com/documentation/websites/forms-2-0#examples
 

[SanfordWhiteman]

What @Takehiro said, like in onValidate:

if ( /(\d|^First$)/i.test(vals().Firstname ) ) {
    // kick them back out with an error
}

However I'd be wary of trying to account for too many "fake" names.  Eventually you run up against a false positive, especially in your own debugging (I frequently use "Sanford Whiteman2," "Sanford Whiteman3" for test accounts).  Also, "Last" is a totally legitimate last name. 

[Anonymous]

Thank you both, I really appreciate the help.

And "Last" is a last name - who knew!