Is there a browser event for the window getting focus?

Question

Is there a way that when I click on my browser, and give it focus, to run a method once? And then when the browser loses focus and then gets the focus back to again run that

Answer 1

$(document).ready(function() { $(window).one("focus", SomeFocusMethod); } );

var SomeFocusMethod = function()
{
    // do stuff
    $(window).one("blur", SomeBlurMethod);
}

var SomeBlurMethod = function() 
{ 
    // do stuff
    $(window).one("focus", SomeFocusMethod); 
}