[thelist] Stupid javascript String.replace() question

[Roger Ly]

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My O'Reilly says String.replace(regexpression , replaceString)

Returns the new string that results when all matches of the
regexpression parameter are replaced by the replaceString parameter.

Why doesn't this work for me?

      function truncateCreditCard(ccNumber)
      {
            alert(ccNumber.replace(/\D+/, ''));
            alert(ccNumber.replace(/\D*/, ''));
            alert(ccNumber.replace(/[^0-9]*/, ''));
            alert(ccNumber.replace(/[^0-9]+/, ''));
      }

I want to strip out all non-numeric characters from a string that I am
passing in.  Want to allow a string like "1111 2222 3333 4444" return
"1111222233334444".  When I execute
truncateCreditCard("1111 2222 3333 4444"); I get four alerts that all
say:

11112222 3333 4444

where the first space is removed, but the others remain.

Sorry, maybe I've been up too long, but am I missing something stupid
here?

Roger

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