If javascript is allowed to persist in the background, read the keydown and cursor location, and keep a socket open back to the server, then that won't matter.

If javascript is allowed to persist in the background, read the keydown and cursor location, and keep a socket open back to the server, then that won't matter. Personally, I do not understand why this has become acceptable, if all I am doing is viewing text and static images. Ideally, I would like it so that the browser suspends everything if a tab is not visible in the foreground, unless I pin it.