Invoke js function on click browser tab

Question

How to invoking js function on click browser tab?
I am looking this solution for invoking user when session gets expire.
Not getting any Solution. Please Help.

Answer 1

If you want to detect, that the browser tab with your page was clicked, when user was on aother tab, then you can use window.onfocus

window.onfocus = function() { alert('Browser tab clicked'); };