Message/index.jsximportReact,{Component}from"react&...

什么是React？React是一个声明式，高效且灵活的用于构建用户...

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1.npmcreateumi 2.?Selecttheboilerplatetype(Usearrowkeys...

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importReact,{Component}from"react";importChild...

 Fist,Youneedtoinstalltheminyourprojectnpminstall@react...

先展示父组件importReact,{Component}from'react'...

父子之间的通信：子传父子组件：importReact,{Component}fro...