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KnockoutJS Essentials
Jorge Ferrando
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eBook - ePub
KnockoutJS Essentials
Jorge Ferrando
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About This Book
About This Book
- Create rich Internet applications using JavaScript
- In a step-by-step manner, explore how to customize and extend KnockoutJS to take your app to the next level
- Great examples show how KnockoutJS can simplify your code and make it more robust
Who This Book Is For
If you are a JavaScript developer who has been using DOM manipulation libraries such as Mootools or Scriptaculous, and you want go further in modern JavaScript development with a simple and well-documented library, then this book is for you. Learning how to use Knockout will be perfect as your next step towards building JavaScript applications that respond to user interaction.
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Informatik AllgemeinKnockoutJS Essentials
Table of Contents
KnockoutJS Essentials
Credits
About the Author
Acknowledgments
About the Reviewers
www.PacktPub.com
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Preface
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Downloading the example code
Errata
Piracy
Questions
1. Refreshing the UI Automatically with KnockoutJS
KnockoutJS and the MVVM pattern
A real-world application – koCart
Installing components
The view-model
The view
The model
Observables to refresh the UI automatically
Managing collections with observables
Inserting elements in collections
Computed observables
Summary
2. KnockoutJS Templates
Preparing the project
Creating templates
The header template
The catalog template
The add-to-cart-modal template
The cart-widget template
The cart-item template
The cart template
The order template
The finish-order-modal template
Handling templates with if and ifnot bindings
Managing templates with jQuery
Managing templates with koExternalTemplateEngine
Summary
3. Custom Bindings and Components
Custom bindings
The toggle binding
The currency binding
Create a binding to debug – the toJSON binding
Being semantic with our bindings
Wrapping a jQuery plugin into a custom binding
Components – isolated view-models
Advanced techniques
Controlling descendant bindings
Using virtual elements
Preprocessing data before binding
Summary
4. Managing KnockoutJS Events
Event-driven programming
The click event
Passing more parameters
Allowing the default click action
Event bubbling
Event types
Event binding
Unobtrusive events with jQuery
Delegation pattern
Building custom events
Events and bindings
Summary
5. Getting Data from the Server
REST services
Defining CRUD
Singleton resources
Setting CRUD operations in the resource
Using resources in the view-model
Using Mockjax to mock HTTP requests
Generating mock data with MockJSON
Retrieving a product by ID
Creating a new product
Separation of concerns – behavior and data
Creating the product service
Creating the CartProduct service
Updating a product
Deleting a product
Sending the order to the server
Handling AJAX errors
Validating data
Extending the product model
Extending the customer model
Summary
6. The Module Pattern – RequireJS
Installing the Knockout context debugger extension
The console
The module pattern
Creating the Shop module
The ViewModel module
The Models module
The Resources module
The Services module
Events, bindings, and Knockout components
Updating the add-to-cart-button component
Updating events
Using RequireJS to manage dependencies
Updating the template engine
Configuring RequireJS
Using RequireJS in our project
Defining the app.js file
Converting a normal module into an AMD module
Applying RequireJS to components
Applying RequireJS to mocks
Applying RequireJS to bindings
Applying RequireJS to events
The limits of the application
Summary
7. Durandal – The KnockoutJS Framework
Installing Durandal
Durandal patterns
The index.html file
The main.js file
The shell view-model
The shell view
Durandal life cycle
The activation life cycle
The promise pattern
Compositions
Object composition
Visual composition
Router
Route parameters
Triggering navigation
Child routers
Events
Widgets
Setting up widgets
Writing the widget view
Writing the widget view-model
Registering the widget
Building a page with Durandal
Summary
8. Developing Web Applications with Durandal – The Cart Project
Introduction
Setting up the project
Routing the project – the shell view-model
The navigation and shell templates
The catalog module
The catalog view
The catalog view-model
The cart service
The log service
Adding products to the catalog
The add product view
The edit view
The add product view-model
Making mocks real
The edit view-model
The cart module
The cart view
The cart view-model
The order module
The order view
The order view-model
Grouping code by feature – managing big projects
Summary
Index
KnockoutJS Essentials
Copyright © 2015 Packt Publishing
All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews.
Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author, nor Packt Publishing, and its dealers and distributors will be held liable for any damages caused or alleged to be caused directly or indirectly by this book.
Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information.
First published: February 2015
Production reference: 1210215
Published by Packt Publishing Ltd.
Livery Place
35 Livery Street
Birmingham B3 2PB, UK.
ISBN 978-1-78439-707-4
www.packtpub.com
Credits
Author
Jorge Ferrando
Reviewers
Bhoomi Desai
Christian Droulers
Magesh Kuppan
Commissioning Editor
Dipika Gaonkar
Acquisition Editor
Owen Roberts
Content Development Editor
Shubhangi Dhamgaye
Technical Editor
Ruchi Desai
Copy Editors
Puja Lalwani
Laxmi Subramanian
Project Coordinator
Harshal Ved
Proofreaders
Simran Bhogal
Safis Editing
Paul Hindle
Indexer
Monica Ajmera Mehta
Graphics
Disha Haria
Production Coordinator
Nilesh R. Mohite
Cover Work
Nilesh R. Mohite
About the Author
Jorge Ferrando is a frontend developer at Uni Micro AS, Norway. He develops economy systems using JavaScript. He has experience as a PHP and C# developer working for companies such as Vigilant and Dreamstar Cash.
Jorge grew up in Callosa d'en Sarrià, Spain. He attended the University of Alicante where he discovered that web applications are his passion. He started to develop websites when he was 16 years old for a little company in his hometown. He then started practicing at Vigilant as a junior PHP...