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)

Introducing the GraphQL API

In the last chapter, we created a backend with Express. The endpoint accepts JSON data as input and returns JSON data as a response. However, it can take any JSON data, which the backend may not expect. Also, there is no easy way to test our API endpoints without the frontend. This is something that we can solve with GraphQL APIs. GraphQL is a special query language that makes communication easier between the client and server. GraphQL APIs have a built-in data structure validation. Each property has a data type, which can be a simple or complex type, consisting of many properties with simple data types.

We can also test GraphQL APIs with GraphiQL, which is a web page that lets us make our own GraphQL API requests easily. Since there is a data type validation for each request, it can provide an autocomplete feature, according to the definition of the GraphQL API schema. The schema provides us with all the data type definitions that are used with queries...