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Learning Vue.js 2

Learning Vue.js 2

By : Olga Filipova
4.4 (10)
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Learning Vue.js 2

Learning Vue.js 2

4.4 (10)
By: Olga Filipova

Overview of this book

Vue.js is one of the latest new frameworks to have piqued the interest of web developers due to its reactivity, reusable components, and ease of use. This book shows developers how to leverage its features to build high-performing, reactive web interfaces with Vue.js. From the initial structuring to full deployment, this book provides step-by-step guidance to developing an interactive web interface from scratch with Vue.js. You will start by building a simple application in Vue.js which will let you observe its features in action. Delving into more complex concepts, you will learn about reactive data binding, reusable components, plugins, filters, and state management with Vuex. This book will also teach you how to bring reactivity to an existing static application using Vue.js. By the time you finish this book you will have built, tested, and deployed a complete reactive application in Vue.js from scratch.
Table of Contents (11 chapters)
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Exercises for chapter 3

Exercise 1

When we were rewriting the shopping list application using simple components, we lost the application's functionality. The exercise suggests using an events emitting system in order to bring the functionality back.

The code we ended up with in this section was looking similar to what is in the chapter3/vue-shopping-list-simple-components folder.

Why doesn't it work? Check the devtools error console. It states the following:

[Vue warn]: Property or method "addItem" is not defined on the instance but referenced during render. Make sure to declare reactive data properties in the data option.
(found in component <add-item-component>)

Aha! This happens because inside add-item-template we are calling the addItem method which does not belong to this component. This method belongs to the parent component, and of course, the child component does not have access to it. What should we do? Let's emit events! We already know how to...

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