React 16.3.0 已发布，React 是 Facebook 推出的一个为数据提供渲染为 HTML 视图，用来构建用户界面的开源 JavaScript 库。
React 视图通常采用包含以自定义 HTML 标记规定的其他组件的组件渲染。React 为程序员提供了一种子组件不能直接影响外层组件("data flows down")的模型，数据改变时对 HTML 文档的有效更新，和现代单页应用中组件之间干净的分离。
更新内容：
React
Add a new officially supported context API
Add a new React.createRef() API as an ergonomic alternative to callback refs.
Add a new React.forwardRef() API to let components forward their refs to a child.
Fix a false positive warning in IE11 when using React.Fragment
Replace React.unstable_AsyncComponent with React.unstable_AsyncMode
Improve the error message when calling setState() on an unmounted component.
React DOM
Add a new getDerivedStateFromProps() lifecycle and UNSAFE_ aliases for the legacy lifecycles.
Add a new getSnapshotBeforeUpdate() lifecycle
Add a new wrapper to help prepare apps for async rendering.
Add support for onLoad and onError events on the tag
Add support for noModule boolean attribute on the