Monica Powell 6e79d0882a Add lang and hreflang to language pages for screen reader UX (#2033)
* Add lang and hreflang for screen reader UX

I wanted to add `lang` and `hreflang` to the link element for translated languages.  `Lang` is used by screen readers to switch language profiles to provide the correct accent and pronunciation.

>If you have multiple versions of a page for different languages or regions, tell Google about these different variations. Doing so will help Google Search point users to the most appropriate version of your page by language or region.
> Note that even without taking action, Google might still find alternate language versions of your page, but it is usually best for you to explicitly indicate your language- or region-specific pages.

Source: https://support.google.com/webmasters/answer/189077?hl=en

* add hrefLang and Lang attributes

* add alternate pages to head

* Apply suggestions from code review

Co-Authored-By: Alexey Pyltsyn <lex61rus@gmail.com>

* mark english hreflang as x-default

* make english the default on the languages page

* rethink default-x
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reactjs.org

This repo contains the source code and documentation powering reactjs.org.

Getting started

Prerequisites

  1. Git
  2. Node: any 8.x version starting with 8.4.0 or greater
  3. Yarn: See Yarn website for installation instructions
  4. A fork of the repo (for any contributions)
  5. A clone of the reactjs.org repo on your local machine

Installation

  1. cd reactjs.org to go into the project root
  2. yarn to install the website's npm dependencies

Running locally

  1. yarn dev to start the hot-reloading development server (powered by Gatsby)
  2. open http://localhost:8000 to open the site in your favorite browser

Contributing

Guidelines

The documentation is divided into several sections with a different tone and purpose. If you plan to write more than a few sentences, you might find it helpful to get familiar with the contributing guidelines for the appropriate sections.

Create a branch

  1. git checkout master from any folder in your local reactjs.org repository
  2. git pull origin master to ensure you have the latest main code
  3. git checkout -b the-name-of-my-branch (replacing the-name-of-my-branch with a suitable name) to create a branch

Make the change

  1. Follow the "Running locally" instructions
  2. Save the files and check in the browser
  3. Changes to React components in src will hot-reload
  4. Changes to markdown files in content will hot-reload
  5. If working with plugins, you may need to remove the .cache directory and restart the server

Test the change

  1. If possible, test any visual changes in all latest versions of common browsers, on both desktop and mobile.
  2. Run yarn check-all from the project root. (This will run Prettier, ESLint, and Flow.)

Push it

  1. git add -A && git commit -m "My message" (replacing My message with a commit message, such as Fixed header logo on Android) to stage and commit your changes
  2. git push my-fork-name the-name-of-my-branch
  3. Go to the reactjs.org repo and you should see recently pushed branches.
  4. Follow GitHub's instructions.
  5. If possible, include screenshots of visual changes. A Netlify build will also be automatically created once you make your PR so other people can see your change.

Translation

If you are interested in translating reactjs.org, please see the current translation efforts at isreacttranslatedyet.com.

If your language does not have a translation and you would like to create one, please follow the instructions at reactjs.org Translations.

Troubleshooting

  • yarn reset to clear the local cache

License

Content submitted to reactjs.org is CC-BY-4.0 licensed, as found in the LICENSE-DOCS.md file.

Description
The React documentation website
Readme 259 MiB
Languages
TypeScript 59.1%
JavaScript 34.6%
CSS 6.1%
HTML 0.2%