Allow number add SSN Number

by Pankaj Sapkal

HTML

<input type="text" class="telnumber" />

JavaScript

$('.telnumber').keyup(function() {
      var foo = $(this).val().split("-").join(""); // remove hyphens
      foo = foo.match(new RegExp('.{1,4}$|.{1,3}', 'g')).join("-");
      $(this).val(foo);
    });