// 引入 lazyimgimport Lazyimg, { withLazyimg } from'react-lazyimg-component';// 引入 volecity.jsimport'velocity-animate';import'velocity-animate/velocity.ui';// 配置const config = { threshold: 100, // 指定触发阈值 js_effect: 'transition.fadeIn', // 支持 velocity.js 动画效果};// ...
// 引入 lazyimgimport Lazyimg, { withLazyimg } from'react-lazyimg-component'; // 引入 volecity.jsimport'velocity-animate'; import'velocity-animate/velocity.ui'; // 配置const config = { placeholder: 'loading.svg', js_effect: 'transition.fadeIn', // 支持 velocity.js 动画效果 }; const ...
const OtherComponent = React.lazy(async () => import('./OtherComponent')); lazy中的函数返回Promise对象,引入了导出React Component的文件,并且官方提示为了有过度效果,还提供了Suspense组件,而且如果不引入的话还会报错,如下: <Suspense fallback={Loading...}> <OtherComponent /> </Suspense> 以上都是官网...
虽然此时对于 Suspense 的处理中,选择了 fallback 组件加载,但是 workInProgress 仍然在 Suspense 处,且后续会继续回到 primary 组件中。updateSuspenseComponent 方法返回 fallback 组件,进而 React 实际渲染的组件为 fallback 组件。 至此,Suspense 组件的首次加载流程结束,进入 Fiber commit 阶段,并等待 primary 组件...
const resolvedTag = (workInProgress.tag = resolveLazyComponentTag(Component)) resolveLazyComponentTag是ReactFiber提供的根据特性判断组件类型的方法,可以判断是ClassComponent还是FunctionalComponent还是一些内置类型。在组件加载完成之后,就直接设置tag为新的类型了,并且设置了type为返回的Component,就变成了异步加载过来...
LazyComponent 是一个 LazyExoticComponent 类型的组件。 2. exoticComponent 参数的意义 在React 的类型系统中,LazyExoticComponent 是ExoticComponent 的一个超集,用于表示通过 React.lazy() 创建的组件。ExoticComponent 是一个特殊的组件类型,它允许 React 组件具有一些非标准的特性,比如懒加载。 在JSX 语法中,Lazy...
react-lazy-load-image-component-demo Common errors All images are being loaded at once This package loads images when they are visible in the viewport. Before an image is loaded, it occupies 0x0 pixels, so if you have a gallery of images, that means all images will be in the visible pa...
如上代码中,通过 import() 、React.lazy 和Suspense 共同一起实现了 React 的懒加载,也就是我们常说了运行时动态加载,即 OtherComponent 组件文件被拆分打包为一个新的包(bundle)文件,并且只会在 OtherComponent 组件渲染时,才会被下载到本地。 那么上述中的代码拆分以及动态加载究竟是如何实现的呢?让我们来一起...
react-lazy-load-image-component-demo Common errors All images are being loaded at once This package loads images when they are visible in the viewport. Before an image is loaded, it occupies 0x0 pixels, so if you have a gallery of images, that means all images will be in the visible pa...
To implement lazy loading in a React application, you’ll rely on two things: ‘React.lazy()’ function and ‘Suspense’ component. These components hold a significant role in postponing the loading of specific websites. Let’s explore how we can use these react components to apply lazy load...