js判断手机和平板

function isMobileOrTablet() {
    const userAgent = navigator.userAgent;
    const mobileRegex = /Mobi|Android|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i;
    const tabletRegex = /Tablet|iPad|PlayBook|Silk/i;

    if (mobileRegex.test(userAgent) && !tabletRegex.test(userAgent)) {
        return 'Mobile';
    } else if (tabletRegex.test(userUserAgent)) {
        return 'Tablet';
    } else {
        return 'Desktop or unknown';
    }
}

const deviceType = isMobileOrTablet();
console.log(`The device type is: ${deviceType}`);

function isMobileOrTablet() {
    const userAgent = navigator.userAgent;
    const mobileRegex = /Mobi|Android|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i;
    const tabletRegex = /Tablet|iPad|PlayBook|Silk/i;
    const isMobile = mobileRegex.test(userAgent) && !tabletRegex.test(userAgent);
    const isTablet = tabletRegex.test(userAgent);

    if (isMobile) {
        return 'Mobile';
    } else if (isTablet) {
        return 'Tablet';
    } else {
        const screenWidth = window.screen.width;
        const screenHeight = window.screen.height;
        const isTouchDevice = 'ontouchstart' in window || navigator.maxTouchPoints > 0;

        if (isTouchDevice && (screenWidth >= 768 && screenWidth < 1024)) {
            return 'Tablet';
        } else {
            return 'Desktop or unknown';
        }
    }
}

const deviceType = isMobileOrTablet();
console.log(`The device type is: ${deviceType}`);