Is there anyway to force a specific string format? For example this requires numbers and no leading zeros. Code: ^[1-9][0-9]+$ What I'm looking to do is force the end-user to enter the string 'lbs' (in that exact order) after the numbers so they'd be forced to enter say '125lbs'. Also for height, would it be possible to force the ' (hyphen) in a format like 5'11? Again, any help will greatly be appreciated.