React的特征单向数据流学习_React

import React from 'react'
const App = () => {
  //设置状态
  const [data, setData] = React.useState('状态 => 视图')
  
  return (
    <div>
      // 视图显示
      <p>{data}</p>
    </div>
  )
}
export default App

import React from 'react'
const App = () => {
  const [data, setData] = React.useState('事件 => 状态改变 => 视图')
  
  return (
    <div>
      <input type="text" onChange={e=>setData(e.target.value)}/>
      <p>{data}</p>
    </div>
  )
}
export default App