Book Image

Backbone.js Blueprints

By : Andrew Burgess
Book Image

Backbone.js Blueprints

By: Andrew Burgess

Overview of this book

<p>Backbone.js is an open source, JavaScript library that helps you to build sophisticated and structured web apps. It's important to have well-organized frontend code for easy maintenance and extendability. With the Backbone framework, you'll be able to build applications that are a breeze to manage.<br /><br />In this book, you will discover how to build seven complete web applications from scratch. You'll learn how to use all the components of the Backbone framework individually, and how to use them together to create fully featured applications. In addition, you'll also learn how Backbone thinks so you can leverage it to write the most efficient frontend JavaScript code.<br /><br />Through this book, you will learn to write good server-side JavaScript to support your frontend applications. This easy-to-follow guide is packed with projects, code, and solid explanations that will give you the confidence to write your own web applications from scratch.</p>
Table of Contents (14 chapters)
Backbone.js Blueprints
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Building the info view


The next class is for what we'll call the InfoView class. This will have both the time counter and the current score. We'll start with the template. Add this to the index.ejs file in the views directory: we're creating two <span> elements: one for the time and another for the points. Here's the code of the template:

<script type='text/template' id='info'>
  <span class='timer'> 00:00 </span>
  <span class='points'> 0 points </span>
</script>

Now, before we write the view class, we need to add a few more methods to our Game collection class. The guess method that we wrote earlier keeps track of the player's score. We also want a Game instance to track the time. The counter will be inside the game instance, but the InfoView class will have to actually show the time. This is the start method:

start: function (callback) {
  this.callback = callback;
  this.loop();
},
loop: function () {
  this.seconds++;
  this.callback(this.time...