---
title: detectDeviceType
tags: browser,intermediate
---

Detects whether 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" or "Desktop"
```