Wow, cool to see this resurface again! I wrote this ~4 years ago and the web has come on along way in that time. New features such as service workers are defini

Wow, cool to see this resurface again! I wrote this ~4 years ago and the web has come on along way in that time. New features such as service workers are definitely making offline a lot easier. On the subject of progressive enhancement, I'm a huge advocate and believe it is in general the way todo content sites. As has been pointed out above though, some use cases do require a different approach. For context this was post was written after working on a number of HTML5 apps that were wrapped in Cordova/PhoneGap.