### detectDeviceType Detects wether the website is being opened in a mobile device or a desktop/laptop. Use a regular expression to test the `navigator.userAgent` property to figure out if the device is a mobile device or a desktop/laptop. ```js const detectDeviceType = () => /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent) ? "Mobile" : "Desktop"; ``` ```js detectDeviceType() // "Mobile" detectDeviceType() // "Desktop" ```