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Vue.js 3 By Example

You're reading from   Vue.js 3 By Example Blueprints to learn Vue web development, full-stack development, and cross-platform development quickly

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Product type Paperback
Published in Apr 2021
Publisher Packt
ISBN-13 9781838826345
Length 320 pages
Edition 1st Edition
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Author (1):
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John Au-Yeung John Au-Yeung
Author Profile Icon John Au-Yeung
John Au-Yeung
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Table of Contents (10) Chapters Close

Preface 1. Chapter 1: Creating Your First Application in Vue 3 2. Chapter 2: Building a Vue 3 Progressive Web App FREE CHAPTER 3. Chapter 3: Building a Slider Puzzle Game with Tests 4. Chapter 4: Building a Photo Management Desktop App 5. Chapter 5: Building a Multipurpose Calculator Mobile App with Ionic 6. Chapter 6: Building a Vacation Booking App with the PrimeVue UI Framework 7. Chapter 7: Creating a Shopping Cart System with GraphQL 8. Chapter 8: Building a Chat App with Vue 3, Laravel, and Socket.IO 9. Other Books You May Enjoy

Creating a GraphQL API with Express

To start the shopping cart system project, we first create a GraphQL API with Express. We start with the backend since we need it for both frontends. To get started, we have to add a few libraries that are needed to manipulate the SQLite database and add authentication to our app. Also, we need the library to enable Cross-Origin Resource Sharing (CORS) in our app.

CORS is a way to let us make requests from the browser to an endpoint hosted in a different domain from where the frontend is hosted.

To make our Express app accept GraphQL requests, we use the graphql and express-graphql libraries. To install both, we run the following command:

npm i cors jsonwebtoken sqlite3 express-graphql graphql

After installing the packages, we are ready to work on the code.

Working with resolver functions

First, we work on the resolver functions. To add them, we first add a resolvers folder into the backend folder. Then, we can work on the resolver...

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