牙买加电话号码：格式、区号和验证指南

+1 (Area Code) XXX-XXXX
   ↓          ↓    ↓
   876/658    Local Number

// [E.164 format](https://www.sent.dm/resources/e164-phone-format) Validation (Recommended for storage and API communication)
const jamaicaNumberRegex = /^\+1(876|658)[2-9]\d{6}$/;

// Local Format Validation (Flexible for user input)
const localFormatRegex = /^(?:1)?(?:\s*\(?(?:876|658)\)?)?\s*[2-9]\d{2}[- ]?\d{4}$/;

function isValidJamaicanNumber(phoneNumber) {
  const cleanedNumber = phoneNumber.replace(/[^\d+]/g, '');
  return jamaicaNumberRegex.test(cleanedNumber);
}

console.log(isValidJamaicanNumber('+18765550123')); // true
console.log(isValidJamaicanNumber('876-555-0123')); // false (local format, not E.164)

function normalizeJamaicanNumber(phoneNumber) {
  const cleanedNumber = phoneNumber.replace(/[^\d+]/g, '');
  if (!isValidJamaicanNumber('+' + cleanedNumber)) { // Prepend '+' for validation
    return null; // Or throw an error, depending on your needs
  }
  return '+' + cleanedNumber;
}

console.log(normalizeJamaicanNumber('1 (876) 555-0123')); // +18765550123
console.log(normalizeJamaicanNumber('6585550123')); // +16585550123

function validateAndFormat(phoneNumber) {
  try {
    const normalizedNumber = normalizeJamaicanNumber(phoneNumber);
    if (!normalizedNumber) {
      throw new Error("Invalid Jamaican phone number format.");
    }
    return normalizedNumber;
  } catch (error) {
    console.error(`Phone number processing failed: ${error.message}`);
    // Handle the error appropriately, e.g., display an error message to the user
    return null;
  }
}