About This BookCreate beautiful and interactive Firefox OS applications by applying your knowledge of web developmentCater your applications to a huge number of users by porting them to the Firefox OSA step-by-step learning workflow with real-life applications to demonstrate the conceptsWho This Book Is ForThis is a practical guide that uses hands-on examples to teach you how to create applications for Firefox OS, and also how to port these applications to the Firefox Marketplace. An understanding of HTML5, JavaScript, and CSS is required.What You Will LearnInstall, access, and use the Firefox OS simulator with the help of WebIDEGet to know about application manifest files and the essential differences between web applications and Firefox OS applicationsCreate an application that measures the tapping speed of the userCreate an application that allows a user to check in at a place with geolocation taggingAccess device-specific features with WebAPIs and implement these by building a photo editing and sharing applicationSubmit your own applications to the Firefox Marketplace and share them with othersProfessionally maintain the code of your application with the help of GitHub, and deploy your hosted applications to OpenShiftIn DetailThis book will help you excel in the art of developing applications for Firefox OS.Starting with an introduction to Firefox OS, how to use the WebIDE, and then looking at the application structure, this book introduces applications of increasing complexity with each chapter. An application that measures your tapping speed, a geolocation tagging application, and a photo editing and sharing application are the three applications that will be built from scratch. You will learn about topics such as the difference between various types of Firefox OS applications, application manifest files, offline apps, and design principles for applications. You will also learn to test and submit applications to the Firefox Marketplace.By the end, you will be able to develop beautifully designed, fully-fledged, and rigorously tested Firefox OS applications and also share them with the Firefox Marketplace.