How to optimize performance of Vue and practical suggestions (asynchronous lazy loading of routes, asynchronous lazy loading of components, introduction of CDN)

How Vue optimizes performance and practical suggestions (routing asynchronous lazy loading, component asynchronous lazy loading, CDN introduction)

Vue is one of the more popular front-end frameworks, and its advantages have been understood by the majority of developers. and recognition. But in the process of developing applications, optimizing the performance of Vue is also an inevitable problem. This article will introduce how to optimize the performance of Vue and improve user experience through asynchronous lazy loading of routes, asynchronous lazy loading of components, and the introduction of CDN.

1. Routing asynchronous lazy loading

Under normal circumstances, when we use Vue’s routing function, all components will be loaded at once when the page is loaded, regardless of whether they are currently needed. . This will not only increase the loading time of the page, but also consume unnecessary resources. To solve this problem, Vue provides asynchronous lazy loading function.

Asynchronous lazy loading of routes means that only when the user clicks on a route, the components under the route will be loaded. It can be implemented through the import() function or require.ensure() function of webpack. For example:

    const Foo = () => import('./Foo.vue');

or

    const Foo = resolve => require(['./Foo.vue'], resolve);

. In this way, when the user clicks the link to enter the route, it will Dynamically loading components can effectively reduce the loading time of the first screen and improve user experience.

2. Asynchronous lazy loading of components

Similarly, we can also use Vue's asynchronous lazy loading function to postpone the loading of components until they are needed. In applications, we usually load components dynamically based on different business needs, rather than loading them all at once when the page is initially loaded.

Vue’s asynchronous lazy loading function can be implemented through webpack’s import() function or require.ensure() function. Take loading components as an example:

    Vue.component('my-component', () => import('./MyComponent.vue'))

or

    Vue.component('my-component', resolve => require(['./MyComponent.vue'], resolve))

In this way, the component will be loaded only when it needs to be used, avoiding the performance loss caused by loading all components at once.

3. Introduction of CDN

In addition to routing and asynchronous lazy loading of components, CDN is also an important way to optimize Vue performance. CDN (Content Delivery Network), which is a content delivery network, can cache your static resource files and accelerate the transmission of resources through a global network, thus improving the page loading speed.

How to use CDN? First, introduce the Vue library and its dependent libraries into the CDN:

    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/vue-router/dist/vue-router.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/vuex/dist/vuex.min.js"></script>

Then, when using Vue, you only need to reference your own files in the HTML file:

    <script src="/dist/app.js"></script>

When the user is When accessing the application, the CDN caches the files and provides fast access. Doing so can not only reduce the pressure on the server, but also increase user access speed, thereby improving user experience.

Conclusion:

Through the above three methods, we can effectively optimize the performance of Vue, reduce the loading time of the application, and improve the user experience. However, in practice we need to make reasonable choices based on business needs and actual conditions to achieve the best results and improve the performance of our applications.

The above is the detailed content of How to optimize performance of Vue and practical suggestions (asynchronous lazy loading of routes, asynchronous lazy loading of components, introduction of CDN). For more information, please follow other related articles on the PHP Chinese website!