荷兰电话号码：格式、区号和验证指南

const dutchPhoneValidators = {
  geographic: /^0[1-9]\d{7}$/, // Catches general 9-digit geographic numbers.  Further validation may be needed for specific area codes.
  mobile: /^06[1-58]\d{7}$/,
  tollFree: /^0800\d{4,7}$/,
  premiumRate: /^090[069]\d{4,7}$/
};

function validateDutchPhoneNumber(number, type) {
  const cleanNumber = number.replace(/\s+/g, ''); // Remove whitespace
  return dutchPhoneValidators[type].test(cleanNumber);
}

// Example usage:
console.log(validateDutchPhoneNumber('020 123 4567', 'geographic')); // Returns true after whitespace removal
console.log(validateDutchPhoneNumber('0612345678', 'mobile')); // Returns true

function handlePhoneValidation(phoneNumber) {
  try {
    const cleaned = phoneNumber.replace(/[\s\-\(\)]/g, ''); // Remove formatting characters
    if (!/^0\d{9,}$/.test(cleaned)) { // Initial length check (minimum 9 digits for most numbers)
      throw new Error('Invalid number length or format. Numbers should start with 0 and have at least 9 digits.');
    }

    // More specific validation based on prefix
    if (cleaned.startsWith('06')) {
      if (!validateDutchPhoneNumber(cleaned, 'mobile')) {
        throw new Error('Invalid mobile number format.');
      }
      // ... (Add similar checks for other number types)
    } else if (cleaned.startsWith('0')) { // Geographic numbers
        if (!validateDutchPhoneNumber(cleaned, 'geographic')) {
            throw new Error('Invalid geographic number format. Please check the area code and subscriber number.');
        }
    } else {
        throw new Error('Invalid number format. Numbers should start with 0.');
    }

    return { isValid: true, formattedNumber: formatDutchPhoneNumber(cleaned) }; // Placeholder for formatting function
  } catch (error) {
    return { isValid: false, error: error.message };
  }
}


// Example usage
console.log(handlePhoneValidation('020-1234567')); // Example valid landline
console.log(handlePhoneValidation('0612345678')); // Example valid mobile
console.log(handlePhoneValidation('+31612345678')); // Example invalid (missing leading 0 for domestic validation)
console.log(handlePhoneValidation('0800-1234')); // Example valid toll-free
console.log(handlePhoneValidation('090012345')); // Example valid premium rate
console.log(handlePhoneValidation('12345')); // Example invalid format