基于vue和react的spa进行按需加载的实现方法

//roter配置的分割代码
import Vue from 'vue'
import Router from 'vue-router'
const listnav=()=> import('@/components/listnav')
const adminav=()=> import('@/components/adminav')
Vue.use(Router)
const router = new Router({
  routes:[{
    path:'/listnav',
    name:'listnav',
    component:listnav
  },
  {
    path:'/adminav',
    name:'adminav',
    component:adminav
  }
  ]})
export default router

2.webpack输出文件配置

//webpack.base.conf.js
moudle.exports = {
  entry:{
    app:'./src/main.js'
  },
  output:{
    path:"../dist",
    filename:'js/[name].js',
    chunkFilename:'js/[name].js'
  }
}

react按需加载应用

1,模块分割

同样模块分割可采用react-router进行划分

//router配置分割代码
import React, {PureComponent, Component ,createElement} from 'react';
import {HashRouter as Router, Route,Link,withRouter} from 'react-router-dom';
import Home from "../component/home"
function getAsyncComponent(load) {
 return class AsyncComponent extends PureComponent {
  constructor(props) {
   super(props);
  }
  componentDidMount() {
   // 在高阶组件 DidMount 时才去执行网络加载步骤
   load().then(({default: component}) => {
   // 代码加载成功，获取到了代码导出的值，调用 setState 通知高阶组件重新渲染子组件
    this.setState({
     component,
    })
   });
  }
  render() {
   const {component} = this.state || {};
   // component 是 React.Component 类型，需要通过 React.createElement 生产一个组件实例
   return component ? createElement(component) : null;
  }
 }
}
const Routes = () =>(
  <HashRouter>
    <Route path="/home/:test" exact component={Home}/>
    <Route path='/details/:id' component={getAsyncComponent(
     // 异步加载函数，异步地加载 details组件
     () => import('../component/details')
    )}/>
  </HashRouter>
)
export default Routers;

2.webpack输出文件配置

//webpack.base.config.js
module.exports = {
  entry:{
    main: "../src/index.js", //入口文件
  },
  output:{
    path:"../dist",//出口文件
    filename:"js/[name].js",
    chunkFilename:"js/[name].js",
    publicPath: ''
  }
}

3.按需加载组件中的props传递

在按需加载划分后，按需加载的组件不能接收到传递来的props,因此不能通过this.props.match.params来获取router配置时所带入的参数。

解决方法利用react-router中的withRouter