函数式组件，解耦业务逻辑和视图，提高组件复用率和扩展性
函数式组件，意味着该组件无状态（没有响应式数据视图），无实例，因为没有视图渲染，因而渲染开销很低。大部分情况下用来包裹组件，配合作用域插槽，可以达到高阶组件的效果，用来分离视图渲染和业务逻辑非常有效，是一个值得注意的特性。
这个项目就是一个函数式组件使用的实例，分离了业务逻辑数据处理和视图渲染逻辑，使得一个组件可以应对不同种情况的布局。有需要的话可以下载下来运行看看，学习一下。
代码下载下来之后，运行以下命令即可查看效果
npm install && npm run dev
Renderless component, not functional component.
React
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Some thing interesting about web. New door for the world.
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Some thing interesting about visualization, use data art
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