How to implement server-side rendering (SSR) with Nuxt.js?

To implement server-side rendering (SSR) with Nuxt.js, follow these steps:

Start by installing Nuxt.js globally on your machine:

$ npm install -g create-nuxt-app

Create a new Nuxt.js project by running the following command:

$ create-nuxt-app my-app

Answer the prompts to configure your project. Choose "Server-side rendering (SSR)" as the rendering mode.
Once the project is created, navigate into the project directory:

$ cd my-app

To enable server-side rendering, open nuxt.config.js in a code editor and make sure ssr: true is set:

export default {
  ssr: true
}

Write your application by creating Vue components in the pages directory. Each component will represent a route in your application.
To fetch data from an external API or server, use the asyncData method in your component. This method is called on the server-side during rendering:

export default {
  async asyncData({ $axios }) {
    const response = await $axios.get('https://api.example.com/data')
    return { data: response.data }
  }
}

To use the fetched data in your component, access it in the data property:

<template>
  <div>
    <h1>{{ data.title }}</h1>
    <p>{{ data.description }}</p>
  </div>
</template>

<script>
export default {
  async asyncData({ $axios }) {
    const response = await $axios.get('https://api.example.com/data')
    return { data: response.data }
  }
}
</script>

Build and start your application:

$ npm run build
$ npm start

Your application is now server-side rendered! Access it at http://localhost:3000.

With these steps, you have successfully implemented server-side rendering with Nuxt.js!