1. Introduction

In this tutorial, we will delve into the concept of nested layouts in Nuxt.js, a powerful feature that allows you to create complex page structures. Nuxt.js is a modern, open-source JavaScript framework built on Vue.js that simplifies the web development process.

Upon completion of this tutorial, you will be able to create, use, and understand the working of nested layouts in Nuxt.js.

Prerequisites

Before you proceed, you should have a basic understanding of the following:
- JavaScript
- Vue.js
- Nuxt.js

2. Step-by-step Guide

Understanding Nested Layouts

In Nuxt.js, a layout is a component that wraps a page component. Nested layouts are layouts within layouts. This feature is useful when you have a part of the page that needs to change depending on the route, but another part remains the same.

Creating a Nested Layout

To create a nested layout, you simply need to add a Vue file in the layouts directory and then use the <Nuxt /> component where you want to inject your page.

Using the Nested Layout

To use a layout, you should define it in your page component using the layout property.

3. Code Examples

Let's say we have a main layout with a navigation bar and a footer that remains the same across all pages.

// layouts/default.vue
<template>
  <div>
    <nav>...Navigation Bar...</nav>
    <Nuxt />
    <footer>...Footer...</footer>
  </div>
</template>

Now, we want a nested layout for some pages that have a sidebar in addition to the navigation and footer.

// layouts/with-sidebar.vue
<template>
  <div>
    <Nuxt />
    <aside>...Sidebar...</aside>
  </div>
</template>

To use this with-sidebar layout in a page, define it in the layout property of the page component.

// pages/index.vue
<template>
  <div>...Content...</div>
</template>

<script>
export default {
  layout: 'with-sidebar',
}
</script>

4. Summary

In this tutorial, we learned how to create and use nested layouts in Nuxt.js. We saw how layouts can help us make our code more structured and maintainable.

To further your learning, consider exploring how to make layouts dynamic based on data and how to use Nuxt.js plugins.

Additional resources:
- Nuxt.js Documentation
- Vue.js Guide

5. Practice Exercises

1. Create a nested layout with a header, footer, and a right sidebar.

2. Create a page that uses the layout you created in exercise 1 and add some content to the page.

3. Make the sidebar in the layout you created in exercise 1 dynamic, i.e., it should show different content based on the route.

Solutions and explanations can be found in the Nuxt.js Documentation. Continue practicing by creating different layouts and using them in pages.