Book Image

Vue.js 3 By Example

By : John Au-Yeung
Book Image

Vue.js 3 By Example

By: John Au-Yeung

Overview of this book

With its huge ecosystem and wide adoption, Vue is one of the leading frameworks thanks to its ease of use when developing applications. However, it can get challenging for aspiring Vue.js developers to make sense of the ecosystem and build meaningful applications. This book will help you understand how you can leverage Vue effectively to develop impressive apps quickly using its latest version – Vue 3.0. The book takes an example-based approach to help you get to grips with the basics of Vue 3 and create a simple application by exploring features such as components and directives. You'll then enhance your app building skills by learning how to test the app with Jest and Vue Test Utils. As you advance, you'll understand how to write non-web apps with Vue 3, create cross-platform desktop apps with the Electron plugin, and build a multi-purpose mobile app with Vue and Ionic. You'll also be able to develop web apps with Vue 3 that interact well with GraphQL APIs. Finally, you'll build a chat app that performs real-time communication using Vue 3 and Laravel. By the end of this Vue.js book, you'll have developed the skills you need to build real-world apps using Vue 3 by working through a range of projects.
Table of Contents (10 chapters)

Summary

In this chapter, we looked deeper into components by defining the computed properties in our components. Also, we added tests for our components so that we can test the parts of our components individually. With the Vue CLI, we added test files and dependencies easily within our app.

Inside our components, we can emit events that propagate to the parent component with the this.$emit() method. It took a string with the event name. The other arguments are the payloads that we want to pass from the parent component to the child components.

To add unit tests to our Vue 3 app and run the tests, we used the Jest test framework. Vue 3 adds its own specific APIs to Jest so that we can test Vue 3 components with it. To test components, we mounted the component by using the mount and shallowMount functions. The mount function lets us mount the component itself, including the nested component. The shallowMount function only mounts the component itself without the child components...