1. Introduction

Goal of the Tutorial

In this tutorial, we aim to explore the concept of component integration in Vue.js. We will create and integrate different Vue.js components to build a dynamic web application.

What You Will Learn

By the end of this tutorial, you will be able to:
- Create Vue.js components
- Integrate components into your Vue.js application
- Understand how to communicate between components

Prerequisites

Before starting this tutorial, you should have a basic understanding of HTML, CSS, JavaScript, and Vue.js.

2. Step-by-Step Guide

Vue.js is a progressive framework for building user interfaces. One of the core features of Vue.js is its component system. Components are reusable Vue instances with a name. We can use these components as custom elements in our application.

Creating Vue.js Components

To create a Vue.js component, we use Vue.component(tagName, options). Here's an example:

Vue.component('my-component', {
  template: '<div>A custom component!</div>'
})

In this example, 'my-component' is the name of our component, and the template is the HTML that defines how our component should appear.

Integrating Vue.js Components

To integrate or use our component in the application, we simply have to add it in our HTML like a regular tag:

<div id="app">
  <my-component></my-component>
</div>

Communicating Between Vue.js Components

Vue.js uses a unidirectional data flow. This means that props are passed down the component tree to descendent (child) components, but not up to ancestor (parent) components. However, child components can emit events, which parent components can listen for.

3. Code Examples

Creating and Integrating a Vue.js Component

// Define a new component called 'button-counter'
Vue.component('button-counter', {
  data: function () {
    return {
      count: 0
    }
  },
  template: '<button v-on:click="count++">You clicked me {{ count }} times.</button>'
})

// Integrate the 'button-counter' component in the application
new Vue({ el: '#app' })

<div id="app">
  <button-counter></button-counter>
</div>

When you click on the button, it increments the 'count' property, and updates the button label.

Communicating Between Vue.js Components

// Define a new component called 'child'
Vue.component('child', {
  props: ['message'],
  template: '<span>{{ message }}</span>'
})

// Integrate the 'child' component in the application
new Vue({ el: '#app' })

<div id="app">
  <child message="hello from parent"></child>
</div>

In this example, the 'child' component receives a prop (message) from its parent component. The message is displayed inside a span element.

4. Summary

In this tutorial, we've learned how to create, integrate, and communicate between Vue.js components. This is a key concept in building dynamic and reusable web applications with Vue.js.

5. Practice Exercises

1. Create a Vue.js component called 'user-card' that displays a user's name and email. Integrate this component into your application.
2. Modify the 'user-card' component to accept a 'user' prop, which is an object that contains a user's name and email. Display the user's information in the component.
3. Create a Vue.js component called 'user-list' that contains a list of 'user-card' components. Each 'user-card' should display the information for a different user. The 'user-list' component should accept a 'users' prop, which is an array of user objects.