Here is a tutorial for creating a Twitter-based Web application that will show tweets from selected geographical areas. The tutorial describes how to create an app, write a manifest file for it, and submit it to the Firefox Marketplace.
Introduction
Unlike applications for platforms like iOS and Android, the first-tier languages of Web applications are HTML, CSS, and JavaScript. These languages are supported by a worldwide web of developer resources. This "Web stack" is available on all modern mobile and desktop hardware and it enables you to maximize code reuse and potentially reach a massive audience on different platforms and devices with little additional effort. In this tutorial we'll explore the different aspects of web app creation, the strategies for designing a flexible, functional app, and coding an app to completion.
Over the course of the tutorial, we'll be employing these techniques and technologies to create a Twitter-based application meant for desktop, mobile phone, and mobile tablet devices. This app will show tweets from selected geographic areas, and is called Area Tweet. Once the app is completed, we'll create the appropriate manifest for submitting our app to the Firefox Marketplace!