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Home > Web Development > Front End Web Development > Learning Vue.js 2
Learning Vue.js 2
Learning Vue.js 2

Learning Vue.js 2: Learn how to build amazing reactive web applications easily with Vue.js

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Full star icon Full star icon Full star icon Full star icon Half star icon 4.4 (10 Ratings)
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Learning Vue.js 2

Chapter 2. Fundamentals – Installing and Using

In the previous chapter, we gained some familiarity with Vue.js. We were able to use it in two different applications that we created from scratch. We learned how to integrate Vue.js into an already existing project. We were able to see Vue's reactive data binding in action.

Now, you are probably asking yourself: how does it work? What does it do to achieve this behavior of fast UI changes when the data model is changed? Probably, you decided to use Vue.js in your project and are now wondering whether it follows some architectural pattern or paradigm so that you should adopt it in your project. In this chapter, we will explore the key concepts of the Vue.js framework to understand all its behind the scenes features. Also in this chapter, we will analyze all the possible ways of installing Vue.js. We will also create a skeleton for our applications, which we will develop and enhance through the next chapters. We will also...

MVVM architectural pattern

Do you remember how we were creating the Vue instance in the first chapter? We were instantiating it calling new Vue({...}). You also remember that in the options, we were passing the element on the page where this Vue instance should be bound and the data object that contained the properties we wanted to bind to our View. The data object is our Model and the DOM element where the Vue instance is bound is our View:

MVVM architectural pattern

Classic View-Model representation where the Vue instance binds one to another

In the meantime, our Vue instance is something that helps to bind our Model to the View and vice versa. Our application thus follows Model-View-ViewModel (MVVM) pattern, where the Vue instance is a ViewModel:

MVVM architectural pattern

The simplified diagram of the Model-View-ViewModel pattern

Our Model contains data and some business logic, and our View is responsible for its representation. ViewModel handles data binding, ensuring that the data changed in the Model is immediately affecting the...

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...

Comparing with other frameworks

When you try a new tool, you want to know how it compares with other tools or frameworks. You can find a deep analysis in this regard on the official page of Vue.js: http://vuejs.org/guide/comparison.html . I will just point to some topics that I find important regarding the mostly used frameworks.

React

React and Vue are really similar. They both use virtual DOM, have reusable components, and are about reactive data. It is worth mentioning, however, that Vue only uses virtual DOM starting from its second major version. Prior to Vue 2.0, it used real DOM. The Vue 2.0 release not only became more performant than Vue 1.0 but it also became more performant than React ( http://vuejs.org/guide/comparison.html#Performance-Profiles ).

The most significant difference is probably the way you create your components in both frameworks. You might already know that in React, everything is JavaScript. Developing everything, even templates, in JavaScript, can actually be...

Vue.js fundamentals

Before putting our hands into the code and starting to enhance our applications with components, plugins, mixins, templates, and other things, let's overview the main Vue features. Let's analyze what are reusable components and how the application state can be managed, and also talk about plugins, filters, and mixins. In this section, we will have just a slight overview of these features. We will learn them deeply in the next chapters.

Reusable components

Now that you know not only what data binding in Vue.js is and how to use it, but also how it works, it is time to introduce another powerful Vue.js feature. Components created with Vue.js can be used and reused in the application as bricks you build your house of. Each component has its own scope of styles and bindings, being completely isolated from the other components.

The component creation syntax is very similar to the Vue instance creation that we already know, and you should only use Vue.extend instead...

MVVM architectural pattern

Do you remember how we were creating the Vue instance in the first chapter? We were instantiating it calling new Vue({...}). You also remember that in the options, we were passing the element on the page where this Vue instance should be bound and the data object that contained the properties we wanted to bind to our View. The data object is our Model and the DOM element where the Vue instance is bound is our View:

Classic View-Model representation where the Vue instance binds one to another

In the meantime, our Vue instance is something that helps to bind our Model to the View and vice versa. Our application thus follows Model-View-ViewModel (MVVM) pattern, where the Vue instance is a ViewModel:

The simplified diagram of the Model-View-ViewModel pattern

Our Model contains data and some business logic, and our View is responsible for its representation. ViewModel handles data binding, ensuring that the data changed in the Model is immediately affecting the View...

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...

Comparing with other frameworks

When you try a new tool, you want to know how it compares with other tools or frameworks. You can find a deep analysis in this regard on the official page of Vue.js: http://vuejs.org/guide/comparison.html . I will just point to some topics that I find important regarding the mostly used frameworks.

React

React and Vue are really similar. They both use virtual DOM, have reusable components, and are about reactive data. It is worth mentioning, however, that Vue only uses virtual DOM starting from its second major version. Prior to Vue 2.0, it used real DOM. The Vue 2.0 release not only became more performant than Vue 1.0 but it also became more performant than React ( http://vuejs.org/guide/comparison.html#Performance-Profiles ).

The most significant difference is probably the way you create your components in both frameworks. You might already know that in React, everything is JavaScript. Developing everything, even templates, in JavaScript, can actually be good...

Vue.js fundamentals

Before putting our hands into the code and starting to enhance our applications with components, plugins, mixins, templates, and other things, let's overview the main Vue features. Let's analyze what are reusable components and how the application state can be managed, and also talk about plugins, filters, and mixins. In this section, we will have just a slight overview of these features. We will learn them deeply in the next chapters.

Reusable components

Now that you know not only what data binding in Vue.js is and how to use it, but also how it works, it is time to introduce another powerful Vue.js feature. Components created with Vue.js can be used and reused in the application as bricks you build your house of. Each component has its own scope of styles and bindings, being completely isolated from the other components.

The component creation syntax is very similar to the Vue instance creation that we already know, and you should only use Vue.extend instead of just Vue...

Installing, using, and debugging a Vue.js application

In this section, we will analyze all the possible ways of installing Vue.js. We will also create a skeleton for our applications that we will develop and enhance through the next chapters. We will also learn the ways of debugging and testing our applications.

Installing Vue.js

There are a number of ways to install Vue.js. Starting from classic, including the downloaded script into HTML within the <script> tags, using tools like bower, npm, or Vue's command-line interface (vue-cli), to bootstrap the whole application.

Let's have a look at all these methods and choose our favorite. In all these examples, we will just show a header on a page saying Learning Vue.js.

Standalone

Download the vue.js file. There are two versions, minified and developer version. The development version is at https://vuejs.org/js/vue.js . The minified version is at https://vuejs.org/js/vue.min.js .

Tip

If you are developing, make sure you use the development non...

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Key benefits

  • Learn how to propagate DOM changes across the website without writing extensive jQuery callbacks code.
  • Learn how to achieve reactivity and easily compose views with Vue.js and understand what it does behind the scenes.
  • Explore the core features of Vue.js with small examples, learn how to build dynamic content into preexisting web applications, and build Vue.js applications from scratch.

Description

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.

Who is this book for?

This book is perfect for novice web developer seeking to learn new technologies or frameworks and also for webdev gurus eager to enrich their experience. Whatever your level of expertise, this book is a great introduction to the wonderful world of reactive web apps.

What you will learn

  • Build a fully functioning reactive web application in Vue.js from scratch.
  • The importance of the MVVM architecture and how Vue.js compares with other frameworks such as Angular.js and React.js.
  • How to bring reactivity to an existing static application using Vue.js.
  • How to use plugins to enrich your applications.
  • How to develop customized plugins to meet your needs.
  • How to use Vuex to manage global application's state.
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Publication date, Length, Edition, Language, ISBN-13
Publication date : Dec 13, 2016
Length: 334 pages
Edition : 1st
Language : English
ISBN-13 : 9781786469946
Category :
Web Development
Languages :
JavaScript
Concepts :
Front End Web Development
Tools :
Vue

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Product Details

Publication date : Dec 13, 2016
Length: 334 pages
Edition : 1st
Language : English
ISBN-13 : 9781786469946
Category :
Web Development
Languages :
JavaScript
Concepts :
Front End Web Development
Tools :
Vue

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Table of Contents

10 Chapters
1. Going Shopping with Vue.js Chevron down icon Chevron up icon
1. Going Shopping with Vue.js
Buzzwords
Vue.js history
The most important thing about Vue.js
Let's go shopping!
Using Vue.js in an existing project
Vue.js 2.0!
Projects using Vue.js
Book roadmap
Let's manage time!
Exercise
Summary
2. Fundamentals – Installing and Using Chevron down icon Chevron up icon
2. Fundamentals – Installing and Using
MVVM architectural pattern
DefineProperty, getters, and setters
Comparing with other frameworks
Vue.js fundamentals
Installing, using, and debugging a Vue.js application
Debugging your Vue application
Scaffolding our applications
Exercise
Summary
3. Components – Understanding and Using Chevron down icon Chevron up icon
3. Components – Understanding and Using
Revisiting components
Benefits of using components
Rewriting the shopping list with simple components
Exercise
Single-file components
Rewriting our shopping list application with single-file components
Exercise
Rewriting the Pomodoro application with single-file components
Reactive binding of CSS transitions
Summary
4. Reactivity – Binding Data to Your Application Chevron down icon Chevron up icon
4. Reactivity – Binding Data to Your Application
Revisiting data binding
Interpolating data
Using expressions and filters
Revisiting and applying directives
Kittens
Summary
5. Vuex – Managing State in Your Application Chevron down icon Chevron up icon
5. Vuex – Managing State in Your Application
Parent-child components' communication, events, and brain teaser
Why do we need a global state store?
What is Vuex?
How does the store work and what is so special about it?
Greetings with store
Installing and using the Vuex store in our applications
Using the Vuex store in the shopping list application
Using Vuex store in the Pomodoro application
Summary
6. Plugins – Building Your House with Your Own Bricks Chevron down icon Chevron up icon
6. Plugins – Building Your House with Your Own Bricks
The nature of Vue plugins
Using the vue-resource plugin in the shopping list application
Creating and using a plugin in the Pomodoro application
Summary
7. Testing – Time to Test What We Have Done So Far! Chevron down icon Chevron up icon
7. Testing – Time to Test What We Have Done So Far!
Why unit tests?
Unit tests for Vue application
Writing unit tests for the shopping list application
Writing unit tests for our Pomodoro application
What is end- to-end testing?
Nightwatch for e2e
Writing e2e tests for the Pomodoro application
Summary
8. Deploying – Time to Go Live! Chevron down icon Chevron up icon
8. Deploying – Time to Go Live!
Software deployment
Moving the application to the GitHub repository
Setting continuous integration with Travis
Deploying the Pomodoro application
Deploying the shopping list application
9. What Is Next? Chevron down icon Chevron up icon
9. What Is Next?
The journey so far
Vue 2.0
Revisiting our applications
Why is it just the beginning?
Summary
A. Solutions to Exercises Chevron down icon Chevron up icon
Exercise for chapter 1
Exercises for chapter 2
Exercises for chapter 3
Summary

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Herbal Apr 22, 2017
Full star icon Full star icon Full star icon Full star icon Full star icon 5
This is a great book.. I advice you to buy this book.. It's very clear and the most important thing is It's not needed component base application because this book gives you the idea.. and naturally the necessary skills to begin developing immediately.
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WiltDurkey Feb 17, 2017
Full star icon Full star icon Full star icon Full star icon Full star icon 5
I quite liked it. Bear in mind when reading this review where I am coming from:- somewhat of a JS newbie, but have been working with it for a while using Jquery to do front-end stuff on a Django app, all with require.js and pre-es6 stuff (i.e. no Node.js or equivalent).- my frontend code was a tangled mess and really I needed to put in something cleaner. Vue fit the bill, because I could read and follow its introductory code right away, unlike React/Angular/Ember. Simple _and_ powerful is always a winning combination in my book. And it didn't seem to _require_ an SPA approach.- but... Vue, especially 2.0, is newer and has less books or online materials, so I needed something to hold my hands going from basic Hello World type examples to something more complex. All the same, I wanted basic stuff because SPA type examples wouldn't apply and I was more interested in the concepts.Pheew! Sorry for the long preamble, but it'll give you an idea of what motivates my review.First, it is quite well structured and easy to follow. You have the obligatory test applications (2 or 3 of them) and they start out using basic Vue features and then, as you go through the chapters and new Vue concepts are introduced, you see them reused, elegantly, in the apps. The apps, IMHO, strike the right balance between not being totally trivial and providing you some insight on what a real Vue-based app might look like. Vs dumping you off at the deep end with some complex code that forces you to think about the app's structure rather than what Vue is doing.Second, Vue itself mostly doesn't care that much about being used as a simple CDN-sourced library or whether it comes from a more sophisticated Node-based system. So I was following the book writing my JS as usual. But as you start looking at reusing Vue Components, then yes, Node or similar is the more natural (and less complex!) way to go. At some point, the book goes into setting up a basic Node+Webpack and points you where to download its own sample configuration. As I had node + npm already installed, I gave it a try and, lo and behold, the sample app ran perfectly. So I kind of stumbled into modern JS best practices following it along. Hey, this is about 5 pages, so no great amount of unnecessary content if you already use Webpack. But a brilliant leg up if you don't and would like to.While it builds on basic concepts, it is not dumbed down - for example there is a detailed explanation of how Vue reactivity works under the covers, starting with how you would achieve it by wrapping attributes in getters and setters.The development concepts conclude with an intro to Vuex, and how to use it to federate data and state among components. This is also important, because, as good as Vue is, it doesn't have a builtin system (events aside) to wire components together and components are compartmentalized by design. That's what Vuex is for. So you can consider Vue+Vuex as the need-to-have for real apps. Again, the concepts are well explained and easy to follow.There is some further material about testing as well. So quite a comprehensive coverage of what it covers. (Should have included 'slots' though).Conclusion: I think that, if you were coming in as an experienced Angular/React/etc... SPA-type dev, then not seeing Vue-Router/Resource and the focus on just the basics might hold you back a bit. You would certainly benefit from the way this book complements the, pretty darn good, official Vue documentation. But you might also be able to figure these things out on your own, without this book. Either way some of the more sophisticated stuff is out of scope here. So it's really a choice between are you a self-researcher or I-prefer-a-book type of guy.To be honest, while I got it at a discount, the full price is somewhat steep - but it's supply and demand stuff - few Vue books, premium price for now (c.f. the dude with the 40page/25$ book) . If you are finding your way into modern JS frontend libraries, Vue's simplicity is appealing and this book is very helpful in gently getting you up to speed.p.s. For some reason the Kindle Paperwhite version uses the smallest font ever. Whenever reading it, I am forced to switch to the largest or next-to-largest size setting, at which point it works well. But then I have to switch it back to the smaller sizes I usually use for other books. No such problem on the iPad Kindle app.
Amazon Verified review Amazon
Amazon Customer Aug 07, 2017
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Love it, the author does a good job of explaining things in a digestible way.
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Sherwin John C. Tragura Mar 12, 2020
Full star icon Full star icon Full star icon Full star icon Full star icon 5
I was looking for some help in understanding the MVC components of VUE application and this one laid out everything i need. Great book!
Amazon Verified review Amazon
amiralles Jul 08, 2017
Full star icon Full star icon Full star icon Full star icon Full star icon 5
This book is awesome! The chapters are packed with code, advise, examples, tips, tricks, and a bit of humor here and there. I highly recommend this book to anyone trying to learn Vue.js.From a basic hello world to real world working app (two, actually), the author teaches you how to build, refactor, test and deploy your Vue.js apps.The code is really well written and easy to follow. I really enjoyed this book. Five starts!
Amazon Verified review Amazon

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About the author

Profile icon Olga Filipova
Olga Filipova
Olga Filipova was born in Kyiv, in Ukraine. She grew up in a family of physicists, scientists, and professors. She studied system analysis in the National University of Ukraine Kyiv Polytechnic Institute. At the age of 20, she moved to Portugal, where she did her bachelors' and masters' degrees in computer science from the University of Coimbra. During her studies, she participated in the research and development of European projects and became an assistant teacher of operating systems and computer graphics subjects. After obtaining her masters' degree, she started working at Feedzai. At that time, it was a small team of four, starting the development of a product from scratch, and now, it is one of the most successful Portuguese startups. At some point, her main responsibility became to develop a library written in JavaScript whose purpose was to bring data from the engine to the web interface. This marked Olga's main direction in tech: web development. At the same time, she continued her teaching practice, giving a course of professional web development to the local professional education center in Coimbra. In 2013, along with her brother and her husband, she started an educational project based in Ukraine. This project's name is EdEra and it has grown up from a small platform of online courses into a big player at the Ukrainian educational system scene. Currently, EdEra is moving towards an international direction and preparing an awesome online course about IT. Don't miss it! In 2014, Olga, with her husband and daughter, moved from Portugal to Berlin, where she started working at Meetrics as a frontend engineer and, after a year, became the team lead of an amazing team of frontend software developers. Currently Olga works in a fintech company called OptioPay as a lead frontend engineer. Olga is happily married to an awesome guy called Rui, who is also a software engineer. Rui studied with Olga at the university of Coimbra and worked with her at Feedzai. Olga has a smart and beautiful daughter, Taissa, a fluffy cat, Patusca, and two fluffiest chinchillas, Barabashka and Cheburashka.
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Shipping Details

USA:

'

Economy: Delivery to most addresses in the US within 10-15 business days

Premium: Trackable Delivery to most addresses in the US within 3-8 business days

UK:

Economy: Delivery to most addresses in the U.K. within 7-9 business days.
Shipments are not trackable

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Add one extra business day for deliveries to Northern Ireland and Scottish Highlands and islands

EU:

Premium: Trackable delivery to most EU destinations within 4-9 business days.

Australia:

Economy: Can deliver to P. O. Boxes and private residences.
Trackable service with delivery to addresses in Australia only.
Delivery time ranges from 7-9 business days for VIC and 8-10 business days for Interstate metro
Delivery time is up to 15 business days for remote areas of WA, NT & QLD.

Premium: Delivery to addresses in Australia only
Trackable delivery to most P. O. Boxes and private residences in Australia within 4-5 days based on the distance to a destination following dispatch.

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Premium: Delivery to most Indian addresses within 5-6 business days

Rest of the World:

Premium: Countries in the American continent: Trackable delivery to most countries within 4-7 business days

Asia:

Premium: Delivery to most Asian addresses within 5-9 business days

Disclaimer:
All orders received before 5 PM U.K time would start printing from the next business day. So the estimated delivery times start from the next day as well. Orders received after 5 PM U.K time (in our internal systems) on a business day or anytime on the weekend will begin printing the second to next business day. For example, an order placed at 11 AM today will begin printing tomorrow, whereas an order placed at 9 PM tonight will begin printing the day after tomorrow.


Unfortunately, due to several restrictions, we are unable to ship to the following countries:

  1. Afghanistan
  2. American Samoa
  3. Belarus
  4. Brunei Darussalam
  5. Central African Republic
  6. The Democratic Republic of Congo
  7. Eritrea
  8. Guinea-bissau
  9. Iran
  10. Lebanon
  11. Libiya Arab Jamahriya
  12. Somalia
  13. Sudan
  14. Russian Federation
  15. Syrian Arab Republic
  16. Ukraine
  17. Venezuela