[JS]一行判斷手機裝置 Detect the mobile device

function isMobileDevice() {
    return (typeof window.orientation !== "undefined") || (navigator.userAgent.indexOf('IEMobile') !== -1);
};

目前支援度有:

• Safari, Chrome, IE10 and Firefox Windows 7/8 browsers
• Safari iOS
• Chrome iOS
• Opera Coast iOS
• Android Stock Browser
• Chrome for Android
• Firefox for Android
• Opera for Android
• Dolphin for Android
• IE Windows Phone 7.8 and Windows Phone 8

但已被MDN列不不推薦方法隻一，但到目前為止依然管用

來源:

https://coderwall.com/p/i817wa/one-line-function-to-detect-mobile-devices-with-javascript