Can I validate a string with only alphanumeric, space and underscore chars only

etabalon · ‎10-27-2016

Good day!

Can I validate a string and only accepts upper/lower case alphanumeric, space, dash and underscore chars only?

I'm trying to validate a server name so users cannot use like $ or % characters as part of the server name.

Thanks,

Enrique

drjohnchun · ‎10-27-2016

Here's a regex that should work, including numeric characters:

if (/^[-\w ]+$/.test(server_name)) {   }   // server_name is OK

else { }   // server_name NOT OK

\w includes [a-zA-Z0-9_]

I suggest running this in both client and server.

Please feel free to connect, follow, mark helpful / answer, like, endorse.

John Chun, PhD PMP

View solution in original post

etabalon · ‎10-28-2016

John, thank you so much for the details. I appreciate it.

Abhinay Erra · ‎10-27-2016

This is a regular expression syntax which can be used in servicenow as well. Servicenow supports all the Javascript methods. Reference to regular expressions

RegExp \w Metacharacter