jquery Form validation for Housenumber

Question

How to validate the below Housenumber using jquery Form validation?

1
1b
12
12b
123
123b
1234
1234b

the letter should be always last position , but not required. Please help me to create regular expression.

Answer 1

The following RegExp will do:

/^\d+[a-zA-Z]*$/

• ^ Must start with
• \d+ Any number (\d), at least once (+)
• [a-zA-Z]* Some letters [a-zA-Z] (optional: *)
• $ Must end here

Answer 2

regex "^\\d+/?\\d*[a-zA-Z]?(?<!/)$" will match numbers like:

• 67
• 67/33
• 67/33a
• 67a
• 67/a