optional characters in javascript regular expression

Posted by Anthony on Stack Overflow See other posts from Stack Overflow or by Anthony
Published on 2010-05-04T21:19:08Z Indexed on 2010/05/04 21:28 UTC
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JavaScript

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regex

I am trying to build a regular expression in javascript that checks for 3 word characters however 2 of them are are optional. So I have:

/^\w\w\w/i

what I am stumped on is how to make it that the user does not have to enter the last two letters but if they do they have to be letters

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