Book Image

PhoneGap 3 Beginner's Guide

By : Giorgio Natili
Book Image

PhoneGap 3 Beginner's Guide

By: Giorgio Natili

Overview of this book

<p>You don’t have to know complex languages like Objective C to compete in the ever-growing mobile market place. The PhoneGap framework lets you use your web development skills to build HTML and JavaScript-based mobile applications with native wrappers that run on all the major mobile platforms, including Android, iOS, and Windows Phone 8.</p> <p>"PhoneGap 3 Beginner's Guide" will help you break into the world of mobile application development. You will learn how to set up and configure your mobile development environment, implement the most common features of modern mobile apps, and build rich, native-style applications. The examples in this book deal with real use case scenarios, which will help you develop your own apps, and then publish them on the most popular app stores.</p> <p>Dive deep into PhoneGap and refine your skills by learning how to build the main features of a real world app.</p> <p>"PhoneGap 3 Beginner's Guide" will guide you through the building blocks of a mobile application that lets users plan a trip and share their trip information. With the help of this app, you will learn how to work with key PhoneGap tools and APIs, extend the framework’s functionality with plug-ins, and integrate device features such as the camera, contacts, storage, and more. By the time you’re finished, you will have a solid understanding of the common challenges mobile app developers face, and you will know how to solve them.</p>
Table of Contents (22 chapters)
PhoneGap 3 Beginner's Guide
Credits
Foreword
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Mobile debugging workflow


As you have seen each browser offers different debugging tools and each tool has its pros and cons. Regardless of which tool you use, however, your debugging workflow is the same.

When investigating a specific problem, you will usually follow this process:

  • Find the relevant code in the debugger's code view pane.

  • Set breakpoint(s) where you think interesting things may occur.

  • Run the script again by reloading the page in the browser if it's an inline script, or by clicking on a button if it's an event handler.

  • Wait until the debugger pauses execution and makes it possible to step through the code.

  • Investigate the values of variables. For example, look for variables that are undefined when they should contain a value, or return false when you expect them to return true.

If necessary, you can use the console to evaluate code or change variables for testing. You can also execute complex JavaScript code and test a solution before implementing it.

Identifying the problem by learning...