Book Image

Vue.js 2 Cookbook

By : Andrea Passaglia
Book Image

Vue.js 2 Cookbook

By: Andrea Passaglia

Overview of this book

Vue.js is an open source JavaScript library for building modern, interactive web applications. With a rapidly growing community and a strong ecosystem, Vue.js makes developing complex single page applications a breeze. Its component-based approach, intuitive API, blazing fast core, and compact size make Vue.js a great solution to craft your next front-end application. From basic to advanced recipes, this book arms you with practical solutions to common tasks when building an application using Vue. We start off by exploring the fundamentals of Vue.js: its reactivity system, data-binding syntax, and component-based architecture through practical examples. After that, we delve into integrating Webpack and Babel to enhance your development workflow using single file components. Finally, we take an in-depth look at Vuex for state management and Vue Router to route in your single page applications, and integrate a variety of technologies ranging from Node.js to Electron, and Socket.io to Firebase and HorizonDB. This book will provide you with the best practices as determined by the Vue.js community.
Table of Contents (19 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Dedication
Preface

Learning how to use computed properties


Computed properties are data in Vue components that depend on some calculation on other, more primitive data. When this primitive data is reactive, the computed properties are up-to-date and reactive themselves. In this context, primitive is a relative term. You can certainly build computed properties based on other computed properties.

Getting ready

Before venturing to prepare this recipe, be sure to familiarize yourself with the v-model directive and the @event notation. You can complete the React to events like clicks and keystrokes recipe in the preceding chapter if you are unsure.

How to do it...

A simple example will clarify what a computed property is:

<div id="app"> 
  <input type="text" v-model="name"/> 
  <input type="text" id="surname" value='Snow'/> 
  <button @click="saveSurname">Save Surname</button> 
  <output>{{computedFullName}}</output> 
</div> 

let surname = 'Snow' 
new Vue({ 
  el: '#app...