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HomeWeb Front-endVue.jsVue-Router: How to use asynchronous components to implement lazy loading of routes?

Vue-Router: How to use asynchronous components to implement lazy loading of routes?

Dec 18, 2023 pm 01:00 PM
Asynchronous component routing lazy loading

Vue-Router: 如何使用异步组件来实现路由懒加载?

Vue-Router: How to use asynchronous components to implement lazy loading of routes?

As the complexity and demands of Web applications increase, optimizing the performance of web pages becomes increasingly important. One of the optimization methods is to implement lazy loading of routes, that is, loading page resources on demand instead of loading the code of all pages into the browser at once. Vue-Router provides a simple and powerful way to implement lazy loading of routes through asynchronous components. This article will introduce how to use asynchronous components to implement lazy loading of Vue-Router routes, and provide specific code examples.

What is lazy loading of routes?

Lazy loading of routes means that only when the user accesses a specific route, the components and resources required for the route are loaded. The advantage of this is that it can reduce the amount of data when the initial page is loaded, thereby improving the loading speed and performance of the page. In Vue, lazy loading of routes is achieved by using asynchronous components.

How to use asynchronous components to implement lazy loading of routes?

Vue-Router provides a simple way to use asynchronous components to implement lazy loading of routes. We only need to change the component attribute in the routing configuration to a function that returns a Promise. The return value of the function is a module containing the component to be loaded. The following are specific steps and code examples:

  1. Create an asynchronous component

First, we need to create an asynchronous component. You can use Webpack's require.ensure syntax or ES6's import syntax to create asynchronous components. For example, we create an asynchronous component named Home:

const Home = () => import('./components/Home.vue');
  1. Configure routing

Next, you need to configure the asynchronous component into the routing . When configuring a component into a route, set the component property to a function that returns an asynchronous component. The following is a simple route configuration example:

import Vue from 'vue';
import VueRouter from 'vue-router';

Vue.use(VueRouter);

const routes = [
  {
    path: '/',
    name: 'home',
    component: () => import('./components/Home.vue'),
  },
  {
    path: '/about',
    name: 'about',
    component: () => import('./components/About.vue'),
  },
  // 其他路由配置...
];

const router = new VueRouter({
  routes,
  mode: 'hash',
});

export default router;

In the above example, the Home and About components are configured as asynchronous components, and only when the corresponding route is accessed These components will be loaded only then.

Through the above two steps, we successfully implemented Vue-Router's routing lazy loading using asynchronous components. When the user accesses the corresponding route, the required components and resources will be dynamically loaded, thereby improving the loading speed and performance of the page.

It should be noted that when using asynchronous components, you need to support the code splitting function of Webpack and use the Vue-Loader plug-in.

Conclusion

This article introduces how to use asynchronous components to implement lazy loading of Vue-Router routes, and provides specific code examples. By using routing lazy loading, the loading speed and performance of the page can be effectively improved. If you are interested in Vue-Router and async components, I hope this article was helpful!

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