## react-device-detect ![npm](https://img.shields.io/npm/dm/react-device-detect?label=npm%20downloads) Detect device, and render view according to the detected device type. ## Installation To install, you can use npm or yarn: ``` npm install react-device-detect --save or yarn add react-device-detect ``` ## When to use this library This library uses a technique called [user agent sniffing](https://developer.mozilla.org/en-US/docs/Web/HTTP/Browser_detection_using_the_user_agent) to detect device information. That means it works by examining the [User Agent string](https://en.wikipedia.org/wiki/User_agent) given by a browser and comparing it to a list of browser and device names it knows about. This technique works, but [has drawbacks](https://css-tricks.com/browser-detection-is-bad/) and may or may not be the right approach, depending on what you're trying to achieve. If you need to detect a specific browser type (e.g. Chrome, Safari, Internet Explorer) or specific category of device (e.g. all iPods), this library can do that. If you just want your React app to behave differently or look different on mobiles in general, [CSS `@media` queries](https://developer.mozilla.org/en-US/docs/Web/CSS/@media) and [`matchMedia`](https://developer.mozilla.org/en-US/docs/Web/API/Window/matchMedia) are probably what you want. There are many libraries that can help with using `@media` queries and `matchMedia` in React projects, such as [react-responsive](https://www.npmjs.com/package/react-responsive) and [@react-hook/media-query](https://www.npmjs.com/package/@react-hook/media-query). ## API - [Hooks, SSR and utilities](docs/api.md) - [Selectors](docs/selectors.md) - [Views](docs/views.md) ## Usage Example: ```javascript import { BrowserView, MobileView, isBrowser, isMobile } from 'react-device-detect'; ``` ```html

This is rendered only in browser

This is rendered only on mobile

``` if you don't need a view, you can use `isMobile` for conditional rendering ```javascript import {isMobile} from 'react-device-detect'; function App() { renderContent = () => { if (isMobile) { return

This content is available only on mobile

} return

...content

} render() { return this.renderContent(); } } ``` If you want to leave a message to a specific browser (e.g IE), you can use `isIE` selector ```javascript import { isIE } from 'react-device-detect'; function App() { render() { if (isIE) return

IE is not supported. Download Chrome/Opera/Firefox

return (

...content

) } } ``` If you want to render a view on a specific device and with a specific condition: ```javascript import { browserName, CustomView } from 'react-device-detect'; function App() { render() { return (

...content

) } } ``` ## Style the view You can style a view component by passing class to the `className` prop ```html

View content

``` or you can pass inline styles to `style` prop ```javascript const styles = { background: 'red', fontSize: '24px', lineHeight: '2', }; ``` ```html

View content

``` ### Testing ```js import * as rdd from 'react-device-detect'; rdd.isMobile = true; // use in tests ``` ## License MIT

套件	下載數	Stars	大小	Issues	發布時間	許可

react-device-detect	1,017,309	2,883	49.6 kB	73	2 年前	MIT