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

Using expressions and filters


In the previous example, we have used simple property keys inside the {{}} interpolations. Actually, Vue supports a lot more inside these nice curly brackets. Let's see what it is possible to do there.

Expressions

It might sound unexpected, but Vue supports full JavaScript expressions inside the data binding brackets! Let's go to any of the Pomodoro application components and add any JavaScript expression to the template. You can do some experiments in the chapter4/pomodoro2 folder.

Try, for example, to open the StateTitleComponent.vue file. Let's add some JavaScript expression interpolation to its template, for example:

{{ Math.pow(5, 2) }} 

Actually, you just need to uncomment the following lines:

//StateTitleComponent.vue 
<!--<p>--> 
  <!--{{ Math.pow(5, 2) }}--> 
<!--</p>--> 

You will see number 25 on the page. Nice, isn't it? Let's replace some of our data bindings in the Pomodoro application with a JavaScript...