Get platform of a web browser

browser_platform.js

function getPlatform() {
    const userAgent = navigator.userAgent || navigator.vendor || window.opera;

    // Check for iOS
    if (/iPad|iPhone|iPod/.test(userAgent) && !window.MSStream) {
        return 'iOS';
    }

    // Check for Android
    if (/android/i.test(userAgent)) {
        return 'Android';
    }

    // Check for desktop
    if (/Mac|Win|Linux/.test(navigator.platform)) {
        return 'Desktop';
    }

    // Default to unknown
    return 'unknown';
}