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React Hooks: useEffect All In One

React Hooks: useEffect All In One

useEffect

https://reactjs.org/docs/hooks-effect.html

https://reactjs.org/docs/hooks-rules.html



https://overreacted.io/zh-hans/a-complete-guide-to-useeffect/


useEffect(
  () => {
    doSomething(a, b);
  },
  [a, b],// 观察值,如果是 [] 空数组,组件只会渲染一次,因为没有监听到任何值发生的变化
);

refs

React useEffect 完整指南

https://overreacted.io/zh-hans/a-complete-guide-to-useeffect/

https://flaviocopes.com/react-hook-useeffect/

https://css-tricks.com/run-useeffect-only-once/



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posted @ 2020-10-30 13:50  xgqfrms  阅读(102)  评论(4编辑  收藏  举报