1 Comment

• Assuming javascript regular expressions don't stray too far from the standard, you can shorten this a lot. Not that it matters a whole lot if this one works, but it's good knowledge to have
  
  ^\d{3}-?\d\d-?\d{4}$
  
  \d is equivalent to [0-9]
  
  And if you're matching a single character, you don't need to make it a character class ([-]? is equivalent to -?)