... events, errors, and exceptions are handled; how asynchronous operations work (to keep the user experience fast and fluid); and even the casing of names on methods, properties, and events. The ... important for app developers. Standards-based apps are great, of course, because they run on multiple platforms; your knowledge and experience with standards like HTML5 and CSS3 are likewise portable. ... DirectX, XAML, and, in the case of apps written in JavaScript, 10HTML5 and CSS3. This means that Windows gives you—a developer already versed in HTML, CSS, and JavaScript standards—the ability...