nuxt async asyncData $router

Nuxt.js is a framework for building Vue.js applications. It provides a powerful feature called asyncData, which allows you to fetch data asynchronously and pre-populate the component's data before rendering on the server-side.

asyncData is a special method that you can define in your Nuxt.js pages or layout components. It runs on the server-side and can be used to fetch data from APIs or perform other asynchronous operations. The data returned from asyncData is merged with the component's data, making it available for rendering.

Here's an example of using asyncData in a Nuxt.js component:

<template>
  <div>
    <h1>{{ post.title }}</h1>
    <p>{{ post.body }}</p>
  </div>
</template>

<script>
export default {
  async asyncData({ params }) {
    // Fetch data from an API using the params object
    const response = await fetch(`https://api.example.com/posts/${params.id}`);
    const post = await response.json();

    // Return the fetched data
    return {
      post
    };
  }
};
</script>

In this example, asyncData is used to fetch a blog post from an API based on the `id` parameter in the route. The fetched data is then made available in the component's template using `post.title` and `post.body`.

As for `$router`, it is an object provided by Vue Router in Nuxt.js. It allows you to navigate between different routes programmatically. You can use methods like `$router.push()` or `$router.replace()` to change the current route or navigate to a new one.

I hope this answers your question! Let me know if you have any more doubts.