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Component prefetching with prefetchComponents

Popularity：520 ℃/2024-08-17 12:05:20

title: Component prefetching with prefetchComponents
date: 2024/8/17
updated: 2024/8/17
author: cmdragon

excerpt:
Abstract: This article describes the prefetchComponents feature for prefetching components to improve the user experience. By downloading and caching components in the client-side background, it ensures that they are loaded quickly when users need them. The article covers the basic concepts of prefetchComponents, the difference with preloading, how to use and how to configure and apply this feature in the project, and ultimately achieve the purpose of optimizing the application loading speed.

categories:

  • front-end development

tags:

  • subassemblies
  • pre-select
  • (computing) cache
  • subscribers
  • experience for oneself
  • client (computing)

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utilizationprefetchComponents Perform component prefetching

In theprefetchComponents is a tool that helps you improve the user experience by downloading and caching components in advance while your application is running. When you know that certain components are likely to be used by users, you can reduce latency and improve loading speed by prefetching them.

What is it?prefetchComponents？

prefetchComponents is a function provided to manually prefetch components that are globally registered in the application. This means that a component is downloaded and cached in the background before the user needs it, thus avoiding the user having to wait for the component to download when they need it.

take note of：prefetchComponents Only takes effect on the client side, nothing happens during server-side rendering.

Prefetching vs.

prefetchComponents together withpreloadComponents The functions are similar, but there are some differences:

  • Prefetch: Downloading and caching components in the background allows them to be loaded faster when the user really needs them.
  • Preload: Load components more proactively to ensure that they are ready when the user needs them.

How to useprefetchComponents

basic usage

You can do this byprefetchComponents Prefetch a single component or multiple components. Component names must use PascalCase nomenclature.

Prefetching individual components

await prefetchComponents('MyGlobalComponent');

Prefetching multiple components

await prefetchComponents(['MyGlobalComponent1', 'MyGlobalComponent2']);

Example: Component prefetching

Here's a real-world example of how to use theprefetchComponents Prefetch components.

1. Creating components

First, create two simple components in thecomponents Catalog.

components/

<template>
  <div>
    <h1>Component 1</h1>
  </div>
</template>

<script setup>
  ('MyGlobalComponent1 loaded.');
</script>
components/

<template>
  <div>
    <h1>Component 2</h1>
  </div>
</template>

<script setup>
  ('MyGlobalComponent2 loaded.');
</script>

2. UtilizationprefetchComponents

In a page or plugin, use theprefetchComponents to prefetch these components. For example, thepages/ Page:

pages/

<template>
  <div>
    <h1>Home Page</h1>
  </div>
</template>

<script setup>
  import {onMounted} from 'vue';

  onMounted(async () => {
    await prefetchComponents(['MyGlobalComponent1', 'MyGlobalComponent2']);
  });
</script>

3. Configuration

Make sure your component is globally registered in the In the Center:

export default defineNuxtConfig({
    components: true, // ensure components are imported automatically
}).

4. Running the project

Launch your application:

npm run dev

Verify Prefetch

Open your browser and check the web panel of the developer tools. When the page loads, you should see theMyGlobalComponent1 cap (a poem)MyGlobalComponent2
of the associated web request has been triggered. Thus, the component will be prefetched and cached before the user actually requests it.

summarize

prefetchComponents is a powerful tool to enhance
The application's user experience reduces latency by downloading and caching components in advance. Components load faster when users need to use them. This is achieved through the judicious use ofprefetchComponents
, you can optimize your app for smoother user interactions.

For the rest of the article, please click to jump to the personal blog page or scan the code to follow or WeChat search:Programming Intelligence Front-End to Full-Stack Communication and Growth, read the full article:Component prefetching with prefetchComponents | cmdragon's Blog

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