javascript - Regular expresssion to validate zipcode/postal code -

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i want validate zipcode or pincode in address fields. that's why trying write regular express except a-z (upper , lower both), 0-9 numbers, round breckets (eg. '()' ) , hyphen (-) , space. rules must followed single white space can not on first position, 2 or more white space can not allowed.

some of invalid entries

 1254588  125  255  ((125))  255  125--255  (125) (255)  125>2458  el$ 2458  @l$ 2458

if rules matter, it's easy:

^                  # start of string (?! )              # first character mustn't space (?!.*  )           # no 2 spaces in row [a-za-z0-9 ()-]*   # match number of these allowed characters $                  # end of string

or, javascript: 

/^(?! )(?!.*  )[a-za-z0-9 ()-]*$/

but i'm guessing strings "))))((((", "-------", "a" or "" shouldn't matched, allowed rules.


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