Re: [webcomponents] attributeChangedCallback may be expensive for some attributes (#350)

> only generates one serialization of the properties
if the purpose is to be able to understand old and new value,  why wouldn't that be notified only once, after such serialization happens?

I personally  think it would be way more useful to  receive one `style` changed notification instead of N times per each single change, for the very same reason it's  useful  in  Blink ( less operations per time, snappier,  happy UI and developers )

... or ... is the problem that each of those should trigger different event?  what would be the attribute name then, if not just `style` ?

---
Reply to this email directly or view it on GitHub:
https://github.com/w3c/webcomponents/issues/350#issuecomment-157327883