Is it OK to use unknown HTML tags?

Question

Correct me if I\'m mistaken, but AFAIK, unknown HTML tags in markup (i.e. tags not defined in the HTML spec, like say, ) will eventually be treate

Answer 1

Yes We Can.

There is a new spec going on about custom elements/tag - http://w3c.github.io/webcomponents/spec/custom/.

Only issue with this is you have to use js to register your new element

You can read more about this at

https://developers.google.com/web/fundamentals/getting-started/primers/customelements