Vue.js 3.0 Tutorial

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Vue 3.0 Style Guide

Vue 3.0 server-side rendering

Server-Side Rendering (SSR) is a popular technique for rendering a normally client-side only, single page app (SPA) on the server and then sending a fully rendered page to the client. SSR can help with SEO and improve performance on mobile and slow networks.

In Vue.js, Vue Server Renderer package and Vue Router are traditionally used to accomplish SSR. But with Vue 3.0, there's a more robust solution for SSR: the Vue.js framework "Nuxt.js" has released a version compatible with Vue 3.0 known as Nuxt 3.

Here is a simple guide to create a Nuxt 3.0 (compatible with Vue 3.0) application:

Step 1: Install create-nuxt-app

First, make sure that you have npx installed (npx is included with npm version 5.2+). Then, you can create a new Nuxt 3 project by running:

npx create-nuxt-app my-nuxt-app

Select Nuxt 3 when asked which version of Nuxt to use. The create-nuxt-app will setup a "Hello World" Nuxt project with all the necessary files and configurations.

Step 2: Run the project

You can run the server using:

npm run dev

Now you should have a server running on your localhost.

Step 3: SSR a Page

By default, any .vue file you put into the pages directory will become a route in your application and will be server-rendered.

For example, if you create a file pages/about.vue:

<template>
  <div>
    <h1>About us</h1>
    <p>Welcome to our about us page!</p>
  </div>
</template>

This will automatically create an about us page on the /about route.

Step 4: Pre-fetching Data

In Nuxt 3, if you need to pre-fetch data for SSR, you can use the asyncData function:

<script>
export default {
  async asyncData({ $http }) {
    const posts = await $http.$get('https://api.nuxtjs.dev/posts')
    return { posts }
  }
}
</script>

In this code snippet, we're using the asyncData function to fetch posts from a remote API. This function is called before the component is rendered, and its result is merged with the component's data.

Step 5: Deploying

You can build your application for production by running:

npm run build

You can then start your application in production mode with:

npm run start

This was a simple introduction to SSR with Nuxt 3 and Vue 3. Nuxt.js is a powerful tool that abstracts most of the complex configuration involved in managing SSR. For more advanced uses, check out the Nuxt.js documentation.