js判断ipad系统版本

function getiPadOSVersion() {
    const userAgent = navigator.userAgent;
    const ipadOSVersionMatch = userAgent.match(/OS (\d+)_(\d+)_?(\d+)?/);
    
    if (ipadOSVersionMatch) {
        const major = parseInt(ipadOSVersionMatch[1], 10);
        const minor = parseInt(ipadOSVersionMatch[2], 10);
        const patch = ipadOSVersionMatch[3] ? parseInt(ipadOSVersionMatch[3], 10) : 0;
        
        return {
            major: major,
            minor: minor,
            patch: patch,
            fullVersion: `${major}.${minor}.${patch}`
        };
    }
    
    return null; // 如果不是iPad或者无法识别版本
}

const ipadOSVersion = getiPadOSVersion();
if (ipadOSVersion) {
    console.log(`iPad OS Version: ${ipadOSVersion.fullVersion}`);
} else {
    console.log('Not an iPad or unable to detect OS version.');
}