React:清理函数运行的频率有多高?
原文英文,约600词,阅读约需3分钟。发表于: 。React components with state variables trigger a re-render when those variables are updated. This is expected and is one of React's core features. Additionally, components offer a cleanup function,...
React 组件的状态变量更新会导致重新渲染,并调用清理函数。清理函数在组件卸载时执行,且与状态变量关联时可能多次调用。使用 useEffect 时需谨慎,以避免意外多次执行清理函数。