c57cdbb31d
* Replace zeit.co/new → zeit.co/import * Update deployment.md
50 lines
1.8 KiB
Markdown
50 lines
1.8 KiB
Markdown
# Hello World example
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This example shows how to use react context api in our app.
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It provides an example of using `pages/_app.js` to include the context api provider and then shows how both the `pages/index.js` and `pages/about.js` can both share the same data using the context api consumer.
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We start of by creating two contexts. One that actually never changes (`CounterDispatchContext`) and one that changes more often (`CounterStateContext`).
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The `pages/index.js` shows how to, from the home page, increment and decrement the context data by 1 (a hard code value in the context provider itself).
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The `pages/about.js` shows how to pass an increment value from the about page into the context provider itself.
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## Deploy your own
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Deploy the example using [ZEIT Now](https://zeit.co/now):
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[![Deploy with ZEIT Now](https://zeit.co/button)](https://zeit.co/import/project?template=https://github.com/zeit/next.js/tree/canary/examples/with-context-api)
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## How to use
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### Using `create-next-app`
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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:
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```bash
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npm init next-app --example with-context-api with-context-api-app
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# or
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yarn create next-app --example with-context-api with-context-api-app
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```
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### Download manually
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Download the example:
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```bash
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curl https://codeload.github.com/zeit/next.js/tar.gz/canary | tar -xz --strip=2 next.js-canary/examples/with-context-api
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cd with-context-api
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```
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Install it and run:
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```bash
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npm install
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npm run dev
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# or
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yarn
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yarn dev
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```
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Deploy it to the cloud with [ZEIT Now](https://zeit.co/import?filter=next.js&utm_source=github&utm_medium=readme&utm_campaign=next-example) ([Documentation](https://nextjs.org/docs/deployment)).
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