Parsley U.S. phone number validator

parsley_us_phone_number_validator.html

<input type="tel" name="phone" id="phone" class="form-control" required="" data-parsley-phone="">

<script>
  var parsleyPhoneValidatorSettings = {
    ignoreCharacters: /[()+\- ]/g,
    usPhoneNumber: /^1?\d{10}$/
  };
  
  window.Parsley.addValidator('phone', {
    validateString: function(value) {
      return parsleyPhoneValidatorSettings.usPhoneNumber.test(value.replace(parsleyPhoneValidatorSettings.ignoreCharacters, ''));
    },
    messages: {
      en: 'This value should be a phone number.'
    }
  });
</script>