contrast-with-React.md
## 顶层API 对照表
> preact(-compat) 是指preact+ peact-compat
| 名称 | 类别 | React | anu | preact(-compat) |
|------------------------------|---------------|-------|-------|-----------------|
| React.Component | class | ✔️ | ✔️ | ✔️ |
| React.PureComponent | class | ✔️ | ✔️ | ✔️ |
| React.createClass | Top-Level API | ✔️ | ✔️ | ✔️ |
| React.createElement | Top-Level API | ✔️ | ✔️ | ✔️ |
| React.cloneElement | Top-Level API | ✔️ | ✔️ | ✔️ |
| React.createRef(16.3新) | Top-Level API | ✔️ | ✔️ | ✖️ |
| React.forwardRef(16.3新) | Top-Level API | ✔️ | ✔️ | ✖️ |
| React.createFactory | Top-Level API | ✔️ | ✔️ | ✔️ |
| React.isValidElement | Top-Level API | ✔️ | ✔️ | ✔️ |
| React.createContext(16.3新) | Top-Level API | ✔️ | ✔️ |✖️ |
| React.Fragment(16.2新) | Top-Level API | ✔️ | ✔️ | ✖️ |
| React.DOM | Top-Level API | ✔️ | ✖️ | ✔️ |
| React.PropTypes | Top-Level API | ✔️ | compat | compat |
| React.Children | Top-Level API | ✔️ | ✔️ | ✔️ |
| ReactDOM.render | Top-Level API | ✔️ | ✔️ | ✔️ |
| ReactDOM.unmountComponentAtNode | Top-Level API | ✔️ | ✔️ | ✔️ |
| `ReactDOM.unstable_renderSubtreeIntoContainer` | Top-Level API | ✔️ | ✔️ | ✔️ |
| ReactDOM.findDOMNode | Top-Level API | ✔️ | ✔️ | ✔️ |
| ReactDOMServer.renderToString | Top-Level API | ✔️ | ✔️ | ✔️ |
| ReactDOMServer.renderToStaticMarkup | Top-Level API | ✔️ | ✖️ | ✖️ |
| ReactDOMServer.renderToNodeStream | Top-Level API | ✔️ | ✖️ | ✔️ |
其中，createClass，PropTypes，`unstable_renderSubtreeIntoContainer`不建议大家使用了。
## 组件实例API 对照表
| 名称 | 类别 | React | anu | preact(-compat) |
|------------------------|---------------|-------|-----|-----------------|
| Instance .setState | Component API | ✔️ | ✔️ | ✔️ |
| Instance .replaceState | Component API | ✔️ | ✖️ | ✔️ |
| Instance .forceUpdate | Component API | ✔️ | ✔️ | ✔️ |
| Instance .isMounted | Component API | ✔️ | ✔️ | ✔️ |
## 组件Specs 对照表
| 名称 | 类别 | React | anu | preact(-compat) |
|--------------|-------|-------|-----|-----------------|
| render | Specs | ✔️ | ✔️ | ✔️ |
| state | Specs | ✔️ | ✔️ | ✔️ |
| defaultProps | Specs | ✔️ | ✔️ | ✔️ |
| propTypes | Specs | ✔️ | ✔️ | ✔️ |
## 组件生命周期 对照表
| 名称 | 类别 | React | anu | preact(-compat) |
|---------------------------------------|--------------------|-------|-----|-----------------|
| componentWillMount(合并setState) | Component Lifecyle | ✔️ | ✔️ | ✔️ |
| componentDidMount | Component Lifecyle | ✔️ | ✔️ | ✔️ |
| componentWillReceiveProps(合并setState) | Component Lifecyle | ✔️ | ✔️ | ✔️ |
| shouldComponentUpdate | Component Lifecyle | ✔️ | ✔️ | ✔️ |
| componentWillUpdate | Component Lifecyle | ✔️ | ✔️ | ✔️ |
| componentDidUpdate | Component Lifecyle | ✔️ | ✔️ | ✔️ |
| componentWillUnmount | Component Lifecyle | ✔️ | ✔️ | ✔️ |
| componentDidCatch(16.0新) | Component Lifecyle | ✔️ | ✔️ | ✖️ |
| getDerivedStateFromProps（16.2新） | Component Lifecyle | ✔️ | ✔️ | ✖️ |
| getDerivedStateFromCatch（16.2新） | Component Lifecyle | ✔️ | ✔️ | ✖️ |
| getSnapshotBeforeUpdate（16.3新） | Component Lifecyle | ✔️ | ✔️ | ✖️ |
## 特性支持对照
| 名称 | React | anu | preact(-compat) |
|------------------------------------------|------------|--------|-----------------|
| contextTypes | ✔️ | ✔️ | ✔️ |
| getChildContext | ✔️ | compat | compat |
| ref（两种形式） | ✔️ | ✔️ | ✔️️ |
| cloneElement后字符串ref的正确处理 | ✔️ | ✔️ | ✖️ |
| getDOMNode | ✔️ | ✔️ | ✖️ |
| componentDidUpdate调用setState不会卡死 | ✔️ | ✔️ | ✖️ |
| 无状态组件的模块模式组件 | ✔️ | ✔️ | ✖️ |
| 相同虚拟DOM的context穿透更新策略 | ✔️ | ✔️ | ✖️ |
| style对象 | ✔️ | ✔️ | ✖️ |
| onEvent（尤其是onChange/MouseEnter/Focus的支持） | ✔️ | ✔️ | ✖️ |
| onEventCapture | ✔️ | ✔️ | ✖️ |
| dangerouslySetInnerHTML | ✔️ | ✔️ | ✖️ |
| （非）受控组件 | ✔️ | ✔️ | ✖️ |
| IE8支持 | ✔️（高版本不支持） | ✔️ | ✖️ |
| 组件返回数组或 es6 Set/Map/Itertor | ✔️ | ✔️ | ✖️ |
anu提交ReactIE＋polyfill可以兼容到IE6，三方都支持React官方的Chrome DevTools