检测平板电脑和手机,htaccess或CSS

function getDeviceType() {
    var userAgent = navigator.userAgent;
    if (userAgent.match(/iPad/i)) {
        return 'iPad';
    } else if (userAgent.match(/iPhone/i)) {
        return 'iPhone';
    } else if (userAgent.match(/Android/i)) {
        return 'Android';
    } else {
        return 'Other';
    }
}

/* iPad */
@media only screen and (device-width: 768px) and (device-height: 1024px) and (orientation: portrait) {
    /* iPad 竖屏样式 */
}

/* iPhone */
@media only screen and (device-width: 320px) and (device-height: 568px) and (orientation: portrait) {
    /* iPhone 竖屏样式 */
}

/* Android */
@media only screen and (device-width: 320px) and (device-height: 568px) and (orientation: landscape) {
    /* Android 横屏样式 */
}

/* Other */
@media only screen and (device-width: 320px) and (device-height: 568px) and (orientation: portrait) {
    /* 其他设备竖屏样式 */
}

<script>
    function detectDeviceType() {
        var userAgent = navigator.userAgent;
        if (userAgent.match(/iPad/i)) {
            return 'iPad';
        } else if (userAgent.match(/iPhone/i)) {
            return 'iPhone';
        } else if (userAgent.match(/Android/i)) {
            return 'Android';
        } else {
            return 'Other';
        }
    }
    document.write('设备类型：' + detectDeviceType() + '<br>');
</script>

function detectDeviceType() {
    var userAgent = navigator.userAgent;
    if (userAgent.match(/iPad/i)) {
        return 'iPad';
    } else if (userAgent.match(/iPhone/i)) {
        return 'iPhone';
    } else if (userAgent.match(/Android/i)) {
        return 'Android';
    } else {
        return 'Other';
    }
}
console.log('设备类型：' + detectDeviceType());