vue项目实现路由按需加载(路由懒加载)的3种方式

Z时代
2024-01-10
分类：综合

vue

　转自：https://segmentfault.com/a/1190000011519350

vue异步组件

es提案的import()

webpack的require,ensure()

vue异步组件技术 ==== 异步加载
vue-router配置路由 , 使用vue的异步组件技术 , 可以实现按需加载 .
但是,这种情况下一个组件生成一个js文件

/* vue异步组件技术 */
{
  path: \'/home\',
  name: \'home\',
  component: resolve => require([\'@/components/home\'],resolve)
},{
  path: \'/index\',
  name: \'Index\',
  component: resolve => require([\'@/components/index\'],resolve)
},{
  path: \'/about\',
  name: \'about\',
  component: resolve => require([\'@/components/about\'],resolve)
}

组件懒加载方案二路由懒加载(使用import)

// 下面2行代码，没有指定webpackChunkName，每个组件打包成一个js文件。
/* const Home = () => import(\'@/components/home\')
const Index = () => import(\'@/components/index\')
const About = () => import(\'@/components/about\') */
// 下面2行代码，指定了相同的webpackChunkName，会合并打包成一个js文件。 把组件按组分块
const Home =  () => import(/* webpackChunkName: \'ImportFuncDemo\' */ \'@/components/home\')
const Index = () => import(/* webpackChunkName: \'ImportFuncDemo\' */ \'@/components/index\')
const About = () => import(/* webpackChunkName: \'ImportFuncDemo\' */ \'@/components/about\')

{
  path: \'/about\',
  component: About
}, {
  path: \'/index\',
  component: Index
}, {
  path: \'/home\',
  component: Home
}

webpack提供的require.ensure()

vue-router配置路由，使用webpack的require.ensure技术，也可以实现按需加载。

这种情况下，多个路由指定相同的chunkName，会合并打包成一个js文件。

/* 组件懒加载方案三: webpack提供的require.ensure() */
{
  path: \'/home\',
  name: \'home\',
  component: r => require.ensure([], () => r(require(\'@/components/home\')), \'demo\')
}, {
  path: \'/index\',
  name: \'Index\',
  component: r => require.ensure([], () => r(require(\'@/components/index\')), \'demo\')
}, {
  path: \'/about\',
  name: \'about\',
  component: r => require.ensure([], () => r(require(\'@/components/about\')), \'demo-01\')
}