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react's Issues
React.Component
1.componentWillMount在render之前，所以不会触发rerender
2. 一般推荐在constructor中初始化state，而不是 componentWillMount
homepage
homepage
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特点：基于组件，编写封闭组件管理自身状态，多个组件合成复杂UI
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特点：一次学习，各处使用-serve用 Node、mobile用 React Native
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A SimPle Component
React组件extends自React.Component
JSX语法是可选的：
JSX：return <div>xx</div>
原生：return React.createElement(type,[props],[...children])
ReactDOM.render(element,container[,callback]) //参数为：元素、父节点、可选的回调
作用：在container中调用，渲染react元素element到提供的container节点中，并返回组件引用（对于stainless组件返回的是null）
备注：更高版本可能不用此返回组件引用（由于有时异步渲染组件）
- A Stateful Component
state变化时，重新调用render来重渲染
dangerouslySetInnerHTML 用来直接为元素插入子HTML
INSTALLATION
- 由于React的 gradual adoption特性，可以跟随需求极少量或大量使用
Getting Started
1，如果只是需要向已有网页引入部分交互的话，直接引入React的JS包即可
2，随着项目的扩大，需要考虑更加集成化的设置
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