Detects whether the page is being viewed on a mobile device or a desktop.
Use a regular expression to test the Navigator.userAgent property to figure out if the device is a mobile device or a desktop.
constdetectDeviceType=()=>/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)?'Mobile':'Desktop';detectDeviceType();// 'Mobile' or 'Desktop'