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HomeWeb Front-endVue.jsAnalysis of the latest technology: How does Vue Router Lazy-Loading routing help improve page performance?

最新技术解析:Vue Router Lazy-Loading路由如何助力页面性能的提升?

Latest technology analysis: How does Vue Router Lazy-Loading routing help improve page performance?

As web applications continue to increase in complexity, front-end developers need to find a way to improve page performance. Vue Router Lazy-Loading routing is such a method, which can help us optimize page loading speed and improve user experience.

Vue Router is the official routing library of Vue.js, which can implement the routing function of SPA (Single Page Application). Lazy-Loading routing is an important feature in Vue Router, which allows us to load components in the page on demand instead of loading all components at once. The advantage of this is that it can reduce initial loading time and improve page performance.

In Vue Router, we can use the syntax of Vue asynchronous components to implement routing Lazy-Loading. The following is an example:

const Home = () => import('./views/Home.vue')
const About = () => import('./views/About.vue')

In the above code, we use the import syntax to introduce component files. Notice the ('./views/Home.vue') and ('./views/About.vue') after import, they are our The path to the component file to be imported. The path here can be modified accordingly according to the actual structure of the project.

When we use Lazy-Loading routing, Vue Router will only asynchronously load the corresponding component when a route needs to be loaded. In this way, when a user visits our website, only the components corresponding to the current route are loaded, and other components will be loaded when needed.

In addition to using Lazy-Loading in routing configuration, we can also use it in nested routing. For example, we have a Dashboard component, which contains many sub-components:

const Dashboard = () => import('./views/Dashboard.vue')
const DashboardHome = () => import('./views/dashboard/Home.vue')
const DashboardAbout = () => import('./views/dashboard/About.vue')

In the above code, we can see that the DashboardHome and DashboardAbout components are embedded A subcomponent nested in the Dashboard component. In this case, when a user accesses the Dashboard page, only the Dashboard component will be loaded, not its subcomponents. Only when the user clicks a link in the Dashboard page, the corresponding subcomponent will be loaded.

Lazy-Loading routing can not only improve the loading speed of the page, but also save bandwidth. Because only when a component needs to be loaded, a network request will be made, thereby reducing unnecessary data transmission.

However, there are some things to pay attention to when using Lazy-Loading routing. First of all, it is necessary to divide the components reasonably and perform Lazy-Loading on the components that are not commonly used, so that the effect of Lazy-Loading can be exerted. Secondly, there will be a certain delay when loading the Lazy-Loading component, which requires developers to design reasonable loading prompts or skeleton screens.

To sum up, Vue Router Lazy-Loading routing is a technology that can improve page performance. It reduces the initial loading time and speeds up page loading by loading components on demand. In actual projects, we can reasonably use Lazy-Loading routing to delay loading of uncommon components to improve user experience.

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