Book Image

Learning Vue.js 2

By : Olga Filipova
Book Image

Learning Vue.js 2

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 (18 chapters)
Learning Vue.js 2
Credits
About the Author
Acknowledgments
About the Reviewer
www.PacktPub.com
Dedication
Preface

DefineProperty, getters, and setters


So, what happens with the data once passed to the Vue instance? What are these transformations that Vue applies to it so that it becomes so automatically bound to the View layer?

Let's analyze what would we do if we had, let's say, a string, and every time it changes we would like to apply some transformations to some DOM element. How would we apply the string-changing listener function? To what would we attach it? There is no such thing as var stringVar='hello';stringVar.onChange(doSomething) .

So we would probably wrap the string's value setting and getting in some sort of function that would do something, for example, updating the DOM each time the string was updated. How would you implement it? While you're thinking about it, I'll prepare a quick demo of something interesting.

Open the developer tools on your shopping list application. Let's code a little bit. Create an obj variable and another text variable:

var obj = {}; 
var text = ''; 

Let...