posted 12 years ago
HTML5 is being slowly released over a period of years and in bits and pieces by different browser developers at different times. So, throughout the book I often have to point to where an HTML5 feature is only partially implemented and I give ideas for working around that until all browsers are up to scratch on it.
Still, a lot of HTML5 is useable now on iOS and Android (perhaps with a little tweaking sometimes), so you can definitely make apps with it that work well.