Regex to match '-' delimited alphanumeric words

Question

I would like to test if user type only alphanumeric value or one \"-\".

hello-world                 -> Match
hello-first-world           -> match
this-         


        

Answer 1

Here you go (this works).

var regExp = /^[A-Za-z0-9]+([-]{1}[A-Za-z0-9]+)+$/;

letters and numbers greedy, single dash, repeat this combination, end with letters and numbers.