rsnext/examples/with-react-useragent/README.md
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Co-Authored-By: Luis Alvarez D. <luis@zeit.co>
2020-02-12 17:14:57 -05:00

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# react-useragent example
This example shows how to add user-agent awarness to your next.js app and set it up for server side rendering using [@quentin-sommer/react-useragent](https://github.com/quentin-sommer/react-useragent). It will enable you to directly detect the device from the server side.
You can then decide what to render depending on the device. For example:
- Smaller image for phones
- Dedicated download button fos iOS devices.
The example uses the `pages/_app.js` file to automatically inject user-agent detection in all your pages.
## Deploy your own
Deploy the example using [ZEIT Now](https://zeit.co/now):
[![Deploy with ZEIT Now](https://zeit.co/button)](https://zeit.co/new/project?template=https://github.com/zeit/next.js/tree/canary/examples/with-react-useragent)
## How to use
### Using `create-next-app`
Execute [`create-next-app`](https://github.com/zeit/next.js/tree/canary/packages/create-next-app) with [npm](https://docs.npmjs.com/cli/init) or [Yarn](https://yarnpkg.com/lang/en/docs/cli/create/) to bootstrap the example:
```bash
npm init next-app --example with-react-useragent with-react-useragent-app
# or
yarn create next-app --example with-react-useragent with-react-useragent-app
```
### Download manually
Download the example:
```bash
curl https://codeload.github.com/zeit/next.js/tar.gz/canary | tar -xz --strip=2 next.js-canary/examples/with-react-useragent
cd with-react-useragent
```
Install it and run:
```bash
npm install
npm run dev
# or
yarn
yarn dev
```
Deploy it to the cloud with [ZEIT Now](https://zeit.co/new?filter=next.js&utm_source=github&utm_medium=readme&utm_campaign=next-example) ([Documentation](https://nextjs.org/docs/deployment)).