The loop should only work on the last active tab?

Question

hi friends,

I have a loop as below:

setInterval(
function() {
do_something();
}, 1000);

I want to run this loop only at the last active tab.

For example:

There are 1,2,3,4,5 tabs.

If the 4th tab is active on browser, only run the loop on 4th tab.
If no tabs are active, only run the loop on last active tab.

What do you think about this?

Answer 1

How does the tab code look like? How do you monitor the active state of the selected tab? What doSomething function does?
Could you share the your Code Playground code.

Btw setInterval is not loop, it's timer function.