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10 Digit String to Phone Format

/ Published in: JavaScript
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Formats a 10-digit phone number into a good format (123) 555-1234

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  1. /**
  2.  *  Format phone numbers
  3. */
  4. function formatPhone(phonenum) {
  5.     var regexObj = /^(?:\+?1[-. ]?)?(?:\(?([0-9]{3})\)?[-. ]?)?([0-9]{3})[-. ]?([0-9]{4})$/;
  6.     if (regexObj.test(phonenum)) {
  7.         var parts = phonenum.match(regexObj);
  8.         var phone = "";
  9.         if (parts[1]) { phone += "+1 (" + parts[1] + ") "; }
  10.         phone += parts[2] + "-" + parts[3];
  11.         return phone;
  12.     }
  13.     else {
  14.         //invalid phone number
  15.         return phonenum;
  16.     }
  17. }

URL: http://grover.open2space.com/content/javascript-formatting-phone-numbers-and-postal-codes

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