Learn from the new set of cutting-edge Windows 8 expert developers, and get the low-down from an author with experience from the front line of Windows 8 app development. Theory is all well and good, but when it comes down to it, you can't beat practical advice from someone who's been there and done it. Real World Windows 8 App Development with JavaScript dives into the topics that are essential for making the most of this new platform for application development. You will discover important tips, such as adding monetization options after the project is published on the store to avoid issues with the go-live API, steering clear of problems with the current roaming infrastructure, and how to include health and activity monitoring components built into your app to give you more advanced usage telemetry than that offered by the Windows store. This book is for developers, by a developer who has already fought these battles. You will come away from this book with all the tools, ideas, and inspiration to create successful Windows 8 JavaScript apps.You will learn how to make the most of Microsoft's APIs for hooking into Windows 8 on all devices, including the core ideas of the Promise and the asynchronous programming model, along with new ideas such as contracts and charms that make life easier for you as a developer and give the user a strong unified experience.The release of Windows 8 ushers in a virtually limitless market for developers wanting to publish apps to a worldwide market. Real World Windows 8 App Development with JavaScript addresses developers who aim to break into this market by providing detailed and highly practical explanations of Windows 8 development and samples from an author who's been there an earned the experience. The real world examples in the book adhere to the stylistic guidelines Microsoft has put in place to maintain a consistent look and feel for all applications on this platform. This book includes: *Detailed descriptions of Windows 8 App Development *Samples emphasizing the use of JavaScript and HTML 5 *Adherence to Windows 8 guidelines for successful app acceptance What you'll learn * The fundamentals of the asynchronous programming model * Integrating your app with the Windows 8 system * Working with and capturing media * Extending your app with contracts and charms * Giving users notifications * Monetization and certification Who this book is for This book is for JavaScript developers wanting to create applications for sale in the Windows 8 app store.Developers should have a good knowledge of HTML5 and JavaScript, but no previous Windows 8 app development knowledge is required.