Gordon DentandDan Abramov
cf58f296e9
* Add test exercising public API to test BeforeInputEventPlugin + FallbackCompositionState - I've adopted a similar approach to the existing test for BeforeInputEventPlugin - I've simulated events and then assert the event handler for onBeforeInput is fired or not fired based on the test conditions - The scenarios are tested against IE11, Webkite and Presto environment simulations - I've encorporated what I understand to be the functionality in the FallbackCompositionState test * Prettier * Linting fixes * Remove test for contenteditable in Presto - the contenteditable type is not supported in Presto powered browsers (Opera). * Remove mention of Presto as this explicit condition is no longer handled in BeforeInputEventPlugin. We still need to exercise usage of FallbackCompositionState though so let's keep a test where the env does not support Composition and Text events. * Add tests for envs with only CompositionEvent support * Remove internal tests no longer needed * Shorten test case names to satisfy lint rules * Add tests for onCompositionStart and onCompositionUpdte events The BeforeInputEventPlugin is responsible for emitting these events so we need to add tests for this. This also ensure we exercise the code path that, L207, that was not previously exercised with the public tests.
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.
Documentation
You can find the React documentation on the website.
It 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:
class HelloMessage extends React.Component {
render() {
return <div>Hello {this.props.name}</div>;
}
}
ReactDOM.render(
<HelloMessage name="John" />,
document.getElementById('container')
);
This example will render "Hello John" 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. We recommend using Babel with a React preset to convert JSX into native JavaScript for browsers to digest.
Installation
React is available as the react package on npm. It is also available on a CDN.
React is flexible and can be used in a variety of projects. You can create new apps with it, but you can also gradually introduce it into an existing codebase without doing a rewrite.
The recommended way to install React depends on your project. Here you can find short guides for the most common scenarios:
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.