Question

Possible Duplicate:
How do I find out which Javascript element has focus?

Is it possible to check in Javascript whether the current window has focus?

Answer 1

No, not really. May be you could assign handlers to the focus/blur events of the window, setting a boolean to true or false and use that to determine if it has focus or not.

Something along this line:

window.hasfocus = false;

window.onfocus = function(){
   this.hasfocus = true;
}

window.onblur = function(){
   this.hasfocus = false;
}