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use-state-call

v1.0.1

Published

set useState hook callback and obtain the updated state

Downloads

5

Readme

设置 useState 回调函数并获取更新后 state。

NPM    Github

基于 useState 与 useEffect 封装的 hook,为 setState 提供回调函数,并保证可以在任何位置获取到更新后的 state。

✨ 特性

  • 🌍 适用于任何版本的 React。
  • 🌈 通过 getState 函数获取 state。
  • 📦 提供完整的 TypeScript 类型定义文件。

⚙️ 如何使用

  • 安装依赖
npm install use-state-call
  • 示例
import useStateCall from 'use-state-call'

export default function App(props) {

  // 注意:与传统useState不同的是,useStateCall返回数组的第一个参数为一个函数,函数的返回值为state的值
  const [getCount, setCount] = useStateCall(0);

  const logCount = () => {
    // use-state-call可以允许在任何位置获取到最新(通过setState函数更新后)的state
    // 因此在这里将会打印count+1后的值
    console.log(getCount())
  }

  const update = () => {
    // count加1
    // use-state-call为setState函数提供第二个参数设置回调函数,这个函数会在state被更新后执行
    setCount(getCount() + 1, logCount)
  }

  return (
    <div>
      <span>count:{getCount()}</span>
      <button onClick={update}>更新值</button>
    </div>
  )
}