Nathan Hunzaker
679402a66b
* Hydration Fixture: Only load ReactDOMServer if it exists Fixes an issue where the hydration fixture would try to load in ReactDOMServer below version 14. In version 13, string markup methods exist on the React namespace. * DOM Fixtures: Use class component for App.js This was breaking React 0.13.0. * Hydration Fixture: better findDOMNode compatibility This commit fixes an issue where the Hydration DOM fixture was unusable in React 0.13.0 or lower because of newer API usage. It fixes that by avoiding the use of refs to get the textarea reference in the code editor component, using various versions of findDOMNode as required. * Hydration Fixture: Do not show dropdown for single-line errors If an error showed for the hydration fixture, a detail element was used even if no additional lines could display. In that case, this commit changes the component such that it returns a div. * Deeper React version support for hydration fixture This commit adds support for versions 0.4.0 of React and higher for the hydration fixture. The DOM test fixtures themselves do not support down to React 0.4.0, which would be exhaustive. Instead, the Hydration fixture can pick a version to use for its own purposes. By default, this is the version of React used by the fixtures. In the process of doing this, I had to make some updates to the renderer.html document associated with the hydration fixture, and I've added some comments to better document the history of API changes.
React · 
React is a JavaScript library for building user interfaces.
- Declarative: React makes it painless to create interactive UIs. Design simple views for each state in your application, and React will efficiently update and render just the right components when your data changes. Declarative views make your code more predictable, simpler to understand, and easier to debug.
- Component-Based: Build encapsulated components that manage their own state, then compose them to make complex UIs. Since component logic is written in JavaScript instead of templates, you can easily pass rich data through your app and keep state out of the DOM.
- Learn Once, Write Anywhere: We don't make assumptions about the rest of your technology stack, so you can develop new features in React without rewriting existing code. React can also render on the server using Node and power mobile apps using React Native.
Learn how to use React in your own project.
Installation
React has been designed for gradual adoption from the start, and you can use as little or as much React as you need:
- Use Online Playgrounds to get a taste of React.
- Add React to a Website as a
<script>tag in one minute. - Create a New React App if you're looking for a powerful JavaScript toolchain.
You can use React as a <script> tag from a CDN, or as a react package on npm.
Documentation
You can find the React documentation on the website.
Check out the Getting Started page for a quick overview.
The documentation is divided into several sections:
You can improve it by sending pull requests to this repository.
Examples
We have several examples on the website. Here is the first one to get you started:
function HelloMessage({ name }) {
return <div>Hello {name}</div>;
}
ReactDOM.render(
<HelloMessage name="Taylor" />,
document.getElementById('container')
);
This example will render "Hello Taylor" into a container on the page.
You'll notice that we used an HTML-like syntax; we call it JSX. JSX is not required to use React, but it makes code more readable, and writing it feels like writing HTML. If you're using React as a <script> tag, read this section on integrating JSX; otherwise, the recommended JavaScript toolchains handle it automatically.
Contributing
The main purpose of this repository is to continue to evolve React core, making it faster and easier to use. Development of React happens in the open on GitHub, and we are grateful to the community for contributing bugfixes and improvements. Read below to learn how you can take part in improving React.
Code of Conduct
Facebook has adopted a Code of Conduct that we expect project participants to adhere to. Please read the full text so that you can understand what actions will and will not be tolerated.
Contributing Guide
Read our contributing guide to learn about our development process, how to propose bugfixes and improvements, and how to build and test your changes to React.
Good First Issues
To help you get your feet wet and get you familiar with our contribution process, we have a list of good first issues that contain bugs which have a relatively limited scope. This is a great place to get started.
License
React is MIT licensed.