如何在 Web 浏览器中可靠地检测 iOS 设备及其版本？

function iOS() {
  return [
    'iPad Simulator',
    'iPhone Simulator',
    'iPod Simulator',
    'iPad',
    'iPhone',
    'iPod'
  ].includes(navigator.platform);
}

var iOS = !window.MSStream && /iPad|iPhone|iPod/.test(navigator.userAgent);

function iOSversion() {
  if (iOS) { // Use the above iOS() function
    if (window.indexedDB) { return 'iOS 8 and up'; }
    // Continue adding logic for other iOS versions...
    return 'iOS 3 or earlier';
  }

  return 'Not an iOS device';
}