Chapter 1, From Idea to Realization, introduces you to the structure of a basic KnockoutJS application. It's a good introduction, and it shows how KnockoutJS implements the data-binding.

Chapter 2, Starting Small and Growing in a Modular Way, shows you how to realize a BookingOnline website. We'll see how to realize template and component, and we will use RequireJS to modularize our code.

Chapter 3, SPA for Timesheet Management, shows how you to realize an SPA with DurandalJS (which uses KnockoutJS as a data-binding library).

Chapter 4, Tracking Expense Using PhoneGap, goes in a different direction by using Cordova to build a hybrid mobile application. We will use KnockoutJS with jQuery Mobile and Jasmine to show you how to test a MVVM application realized with KnockoutJS.

Chapter 5, Wizard for the Public Administration, realizes another SPA, keeping in mind accessibility and SEO.

Since this book is mostly about client-side code, the main tools required are a text editor and a browser. However, the realization of hybrid mobile application with Cordova needs a working Node.js installation.

You'll have to install Node.JS (http://nodejs.org), which comes with npm, the Node package manager.

It can be useful to use http-server (a node application) to serve the web application we realize, because the browsers have many limitations when you access them using the file:// protocol.

If you are a JavaScript developer and already know the basics of KnockoutJS and you want to get the most out of it, then this book is for you. This book will help you transition from a small site to a large web application that is easily maintainable.

In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "We can include other contexts through the use of the include directive."

A block of code is set as follows:

myViewModel.categories = ko.computed(function() {
  var results = myViewModel.allCategories(),
      filterByCategory = myViewModel.selectedCategory();
  if (filterByCategory) {
    results = ko.utils.arrayFilter(results, function(category) {
      return category.name === filterByCategory;
    });
  }
  return results;
});

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

var myViewModel = {
  allCategories: ko.observableArray([]),
  selectedCategory: ko.observable(),
  selectedName: ko.observable("")
}; 

Any command-line input or output is written as follows:

# npm install –g http-server

New terms and important words are shown in bold. Words that you see on the screen, for example, in menus or dialog boxes, appear in the text like this: "Here we get the starting page, with an Error loading page."

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