Vue 2 / Vue CLI 3:创建异步单个文件组件

问题描述 投票:0回答:1

我使用Vue-CLI 3并告诉它我想使用vue-router。它在创建的routes.js中生成此类型的Webpack import语句。

// route level code-splitting
// this generates a separate chunk (about.[hash].js) for this route
// which is lazy-loaded when the route is visited.
component: () => import(/* webpackChunkName: "about" */ './views/About.vue')

我开始创建四个视图。一些视图调用组件内部。

Home.vue (Home page and default route at '/')
About.vue
Contact.vue
Photos.vue

我在routes.js中异步制作了About,Contact和Photos

import Home from './views/Home.vue';

/* name = named routes */
export const routes = [
    {
        path: '/',
        component: Home,
        name: 'home'
    },
    {
        path: '/photo/:id',
        // component: Photo,
        component: () => import(/* webpackChunkName: "Photo" */ './views/Photo.vue'),
        name: 'photo'
    },
    {
        path: '/about',
        component: () => import(/* webpackChunkName: "About" */ './views/About.vue'),
        // component: About,
        name: 'about'
    },
    {
        path: '/contact',
        // component: Contact,
        component: () => import(/* webpackChunkName: "Contact" */ './views/Contact.vue'),
        name: 'contact'
    },
    {
        /* Wildcard path to catch all other paths */
        path: '*',
        redirect: '/'
    }
];

当我进行构建时,Vue CLI会创建额外的JS和CSS块(关于。[hash] .js等)。但是,当我加载Home路由时,这些其他块根据Chrome的devtools加载,但响应选项卡中也没有任何内容。然后,当我访问About,Contact或Photo路由时,浏览器会加载这些块,但现在响应选项卡中有一些内容。

异步是否按预期工作?

谢谢。

vue.js webpack vue-router vue-cli-3
1个回答
0
投票

我想我可能已经弄清楚了我的Home路线上的这些额外呼叫是什么。 Webpack有一个可以打开预取的配置。我猜Vue CLI或Webpack的默认设置是打开预取。

https://webpack.js.org/guides/code-splitting/#prefetching-preloading-modules

https://medium.com/webpack/link-rel-prefetch-preload-in-webpack-51a52358f84c

Vue论坛上的某个人向我指出了Vue-CLI文档:https://cli.vuejs.org/guide/html-and-static-assets.html#prefetch

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