Error:The above error occurred in one of your React components及A component suspended while respondi

Uncaught Error: A component suspended while responding to synchronous input. This will cause the UI to be replaced with a loading indicator.

catandsea

5696人浏览 · 2022-07-28 09:29:07

catandsea · 2022-07-28 09:29:07 发布

路由组件的lazyLoad，懒加载问题，当使用通过React的lazy函数配合import()函数动态加载路由组件。

import React, { Component, lazy } from 'react'
·······

const Login = lazy(()=>import('XXXX'))

会报错如下：

错误分析：suspended=>当网速慢时，指定路由组件页面未加载出，则需使用suspense中的fallback在指定页面出现前，加载fallback中的内容。

解决方案：

import React, { Component, lazy,Suspense } from 'react'
·····

const Home = lazy(()=> import('./Home'))
const About = lazy(()=> import('./About'))

·······
<Suspense fallback={<h2>Loading..</h2>}>
  <Routes>
     <Route path="/about" element={<About/>}/>
     <Route path="/home" element={<Home/>}/>
   </Routes>
</Suspense>