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)


By building a GitHub PWA, we learned how to create components that can be reused. We also looked at how to add props to let us pass data from a parent component to a child component. In the child component, we validate the props by checking the data type and specifying whether a prop is required. This way, we can easily see when a prop has a value that is unexpected.

We also looked at how to use watchers to watch for changes with reactive property values. Watchers can be added to watch for changes in any reactive property. We can watch the data that is being changed locally, and also the value of props. They are both reactive, so they will both trigger the watcher methods. We can run asynchronous code within a watcher, which is something that can't be done with computed properties.

Also, we had a look at lifecycle hooks of components. Each component also has its own lifecycle hooks. We can add our own code to the lifecycle methods, to run code when we want to run them. There are lifecycle hooks for all parts of a component lifecycle, including the beginning stage when it is loaded, through to when it is updated and destroyed.

Finally, we learned how to convert our Vue 3 web app into a PWA with a command-line plugin. We can add a plugin to our Vue project to create a PWA. With it, a service worker will be registered in our app to handle different connection types and caching.

In the next chapter, we will create a slider puzzle with Vue 3, with automated tests to test each part of our app.