Another thing I really miss for single page web apps (mobile or not) is iOS style memory warings. It's an event that is emitted when you reach memory limits, an

Another thing I really miss for single page web apps (mobile or not) is iOS style memory warings. It's an event that is emitted when you reach memory limits, and in it you should clear out everything that the user doesn't currently see (read: clear out as much as possible). This allows you to keep DOM subtrees in memory when you navigate the app, in order to make navigating back to previously seen sections of your app very snappy. At the same time you don't have to worry about infinite memory growth as the cached in memory DOM subtress will get nuked when the memory warning emits.