HTTP 204. You send the request, the browser stays where it is. Super simple, and what it was made for. Amazon used to use it quite heavily back in the day.
Also, a tiny bit of JS and no ajax can solve that easily.
> Also, a tiny bit of JS and no ajax can solve that easily.
No disagreement from me that JS solves these issues.
There are edge case clients that would need to contravene this. Most of those clients don't support JavaScript (or in many cases video) in a meaningful way, making the whole thing moot.
No, but in practice all major browsers (Firefox, Chrome, IE, Opera and Safari) do so. And it's not like the implementations of JS and its APIs never differ.