重定向 使用:Navigate 懒加载 使用:lazy,且需要包在loading提示组件中。 路由文件中代码如下: import {Navigate}from"react-router-dom"import React,{lazy}from"react"import Homefrom"../views/Home"constAbout= lazy(()=>import("../views/About"));//懒加载模式的组件写法,外面需要套一层loading 的提示加...
使用dynamic import可以把打包的文件分成两个,一个仅仅包含展示<StockTable />才需要的代码的main文件、一个仅仅包含展示<StockChart />才需要的代码及依赖的文件。 这个技术如此有用,以至于React 16.6增加了一个API:React.lazy(), 使得它更易结合React组件使用。 为了使用React.lazy(),我们需要更改App.js的两个地...
// 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 Lazy...
class App extends React.Component { state = { selectedStock: null }; render() { const { stocks } = this.props; const { selectedStock } = this.state; return ( <React.Suspense fallback={<div>Loading...</div>}> <StockTable stocks={stocks} onSelect={selectedStock => this.setState({...
Pass a query selector string or DOM node. LazyLoad will attach to the window object's scroll events if no container is passed. height Type: Number/String Default: undefined In the first round of render, LazyLoad will render a placeholder for your component if no placeholder is provided and ...
遇到这种情况,通常后端代码会将数据做成分页查询,前端下拉框组件也要支持滑动到底部会自动加载下一页数据。话不多说,直接上代码。正文代码第一步,创建select-load-more.js文件// 定义全局自定义指令 import Vue from 'vue' const selectLazyL elementui
1、通过lazy方法和import动态加载路由组件 2、通过<Suspense></Suspense>指定在加载得到路由打包文件前显示一个loading界面 import React, { Component, lazy, Suspense } from 'react'import { NavLink, Route, Switch, Redirect } from'react-router-dom'import Loading from'./Loading'//import About from './...
export const shopMenuSelector = createSelector( [shopItemSelector, parentSelector], (shopItems, parent) => { // do something with shopItems and parent } ); 只有状态shopItems和parent变化后,才会重新计算。 默认情况下,新旧属性的比对也是采用浅比较来进行的。结合上一小节介绍的Immutable,我们可以进一...
querySelectorAll(".device-img.lazy-load"); var lazyloadThrottleTimeout; loadImg(); function lazyload() { if (lazyloadThrottleTimeout) { clearTimeout(lazyloadThrottleTimeout); } lazyloadThrottleTimeout = setTimeout(loadImg, 200); } function loadImg() { lazyloadImages.forEach(function(img) ...
Pass a query selector string or DOM node. LazyLoad will attach to the window object's scroll events if no container is passed. height Type: Number/String Default: undefined In the first round of render, LazyLoad will render a placeholder for your component if no placeholder is provided and ...