Regex not working

Forum|Forum|15 years ago
February 2, 2011
3 replies
906 views

Can anyone tell me why my regex is not working on my cfinput textbox please. I only want to allow a-z as available charactors to enter and the below code fails.

If i type in $$$ then the regex is flagged up and I get the error message displayed.

Although if I type in a$$, I get no error message.

Thanks,

G

This topic has been closed for replies.

Correct answer Owainnorth

Try putting the start and end chars in, ie ^ at the start and $ at the end to make sure it's matching the entire string.

A

Anonymous

Looks like you found a fix,

There is a tool I use called RegexBuddy that helps me debug Regular Expressions in real time. Also has a gui to help you build a Regular expressions, thats how I started but now I can write them with no problems.

http://www.regexbuddy.com/

S

Scott Stroz

Participating Frequently

The regex you are using is only checking the first character in the string - and only checking to make sure its lowercase.

Try using *

Owainnorth

Inspiring

That would only allow one character, try [a-z]+ to allow one or more.

_

_G_1Author

Inspiring

Thanks for the quick replies guys, your really helpful and both regex examples you have given both work.

To cut a long story short I was give the following regex to use against my surname textbox, and I need to follow 'their' standards so I must use this pattern.

([A-Z'\-]*)|([A-Z'\-][A-Z '\-]*[A-Z'\-])

And this should only allow A-Z (in capitals) and any of the other special charactors that are mentioned in the regex.... Although this pattern is allowing me to enter A$$ and I do not understand why it is allowing the $ sign to be an enterable charactor when the dollar sign is not listed in the regex.

OwainnorthCorrect answer

Inspiring

Try putting the start and end chars in, ie ^ at the start and $ at the end to make sure it's matching the entire string.

Sign up

To post, reply, or follow discussions, please sign in with your Adobe ID.

Sign in to Adobe Community

To post, reply, or follow discussions, please sign in with your Adobe ID.