data-* attributes were introduced more than two years ago in the HTML5 specification, I still see a lot of abuse of the
rel attributes among friends and coworkers. Two weeks ago I gave a short presentation about HTML data attributes to my colleagues at Netlog. It was my intention to show these slides at last week’s Barcamp as well, but I couldn’t make it in the end.
So here it is, a concise introduction to this very useful but largely unknown feature.