How can I make my Live Feed list update only on the active tab or update it when the tab becomes active again?

Try adding onFocus event on the window object to trigger your updates and add onBlur to stop updating your live feeds.

Although I used this Detecting focus of a browser window and I share it here for everyone who needs this without jquery I'll accept the answer above, because it seems to be an elegant and clear solution to my original problem.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.