react-redux
状态管理工具 redux 的 React 封装
Official React bindings for Redux. Performant and flexible.
https://www.npmjs.com/package/react-redux
https://github.com/reduxjs/react-redux
根节点,增加 Provider
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import React from 'react'
import ReactDOM from 'react-dom/client'
import { Provider } from 'react-redux'
import store from './store'
import App from './App'
// As of React 18
const root = ReactDOM.createRoot(document.getElementById('root'))
root.render(
<Provider store={store}>
<App />
</Provider>,
)
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内部组件
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import React from 'react'
import { useSelector, useDispatch } from 'react-redux'
import {
decrement,
increment,
incrementByAmount,
incrementAsync,
selectCount,
} from './counterSlice'
import styles from './Counter.module.css'
export function Counter() {
const count = useSelector(selectCount)
const dispatch = useDispatch()
return (
<div>
<div className={styles.row}>
<button
className={styles.button}
aria-label="Increment value"
onClick={() => dispatch(increment())}
>
+
</button>
<span className={styles.value}>{count}</span>
<button
className={styles.button}
aria-label="Decrement value"
onClick={() => dispatch(decrement())}
>
-
</button>
</div>
{/* omit additional rendering output here */}
</div>
)
}
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