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downloads](https://img.shields.io/npm/dm/react-detect-offline.svg)](https://www.npmjs.com/package/react-detect-offline)\n![gzip size](http://img.badgesize.io/https://unpkg.com/react-detect-offline?compression=gzip\u0026label=gzip%20size)\n![badges](https://img.shields.io/badge/license-MIT-lightgrey.svg)\n\n### Offline and Online components for React\n\nComponents that track [offline and online state](https://developer.mozilla.org/en-US/docs/Online_and_offline_events). Render certain content only when online (or only when offline).\n\n```jsx\nimport { Offline, Online } from \"react-detect-offline\";\n\nconst App = () =\u003e (\n  \u003cdiv\u003e\n    \u003cOnline\u003eOnly shown when you're online\u003c/Online\u003e\n    \u003cOffline\u003eOnly shown offline (surprise!)\u003c/Offline\u003e\n  \u003c/div\u003e\n);\n```\n\n### Demo\n\nCheck out [chris.bolin.co/offline](https://chris.bolin.co/offline) for a simple example ([source code](https://github.com/chrisbolin/offline/blob/master/src/App.js)).\n\n### Components\n\n#### Simple\n\n`\u003cOnline/\u003e` and `\u003cOffline/\u003e` - Components that render their children only when the browser is online/offline.\n\n```jsx\n\u003cOffline\u003eYou're offline right now. Check your connection.\u003c/Offline\u003e\n```\n\n#### Advanced\n\n`\u003cDetector render={({ online }) =\u003e ...}/\u003e` - Component that calls its `render` prop every time the connection state changes. The `render` prop is supplied with an object with an `online` boolean value. _Recommended for more complex cases, e.g. when styles need to be changed with connection status._\n\n```jsx\n\u003cDetector\n  render={({ online }) =\u003e (\n    \u003cdiv className={online ? \"normal\" : \"warning\"}\u003e\n      You are currently {online ? \"online\" : \"offline\"}\n    \u003c/div\u003e\n  )}\n/\u003e\n```\n\n### Props\n\n`\u003cOnline/\u003e`, `\u003cOffline/\u003e`, and `\u003cDetector/\u003e` accept the following props:\n\n| Prop               | Type        | Description                       | Default                        |\n| ------------------ | ----------- | --------------------------------- | ------------------------------ |\n| `polling`          | Obj or Bool | Config for polling fallback [1]   | [see below]                    |\n| `polling.enabled`  | Boolean     | Force polling on or off           | Depends on the browser [1]     |\n| `polling.url`      | String      | URL to pool for connection status | `\"https://ipv4.icanhazip.com\"` |\n| `polling.interval` | Number      | How often (in ms) to poll         | `5000`                         |\n| `polling.timeout`  | Number      | How long (in ms) before timeout   | `5000`                         |\n| `onChange`         | Function    | Called when connection changes    | none                           |\n| `children` [2]     | Element(s)  | Children **not Detector**         | none                           |\n| `render` [3]       | Func        | Render function **Detector only** | none                           |\n\n[1] Polling is only used as a fallback for browsers that don't support the `\"online\"` event. Currently these are Chrome on Windows, Firefox on Windows, and Chrome on Linux.\n\n[2] `\u003cOnline/\u003e` and `\u003cOffline/\u003e` only. `\u003cDetector/\u003e` will not render `children`.\n\n[3] `\u003cDetector/\u003e` only\n\n### Browser Support\n\nThe [web spec](https://developer.mozilla.org/en-US/docs/Online_and_offline_events) we rely on is supported by IE 9+, Chrome 14+, Firefox 41+, and Safari 5+ - that's [94% of worldwide (98% of US)](http://caniuse.com/#feat=online-status) browser traffic. A polling fallback is used for browsers that don't implement the spec in a useful way (see note [1] in the above Props section).\n\n### Contributing\n\nThis package is maintained by [cwise89](https://github.com/cwise89) (and was initially created by [chrisbolin](https://github.com/chrisbolin)).\n\nPRs are welcome!\n\n* Test: `yarn test`\n* Build: `yarn build`. 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