Detect fullscreen mode

Question

Modern desktop version of IE 10 is always fullscreen.

There is a living specification for :fullscreen pseudo-class on W3

But when I tried to det

Answer 1

Here's another solution that might work for you:

function isFullScreen() {
return Math.abs(screen.width - window.innerWidth) < 10; 
}

I prefer to use width since it will help work around tabs and developer info at the bottom.