How to get ipad screen size in javascript?

[Mauro]

Hi,
I need to get dinamically the screen size of all mobile device from a webpage using javascript. I have tried this:

//get windows size
if (document.body && document.body.offsetWidth) {
 windowsWidth = document.body.offsetWidth;
 windowsHeight = document.body.offsetHeight;
}
if (document.compatMode=='CSS1Compat' &&
    document.documentElement &&
    document.documentElement.offsetWidth ) {
 windowsWidth = document.documentElement.offsetWidth;
 windowsHeight = document.documentElement.offsetHeight;
}
if (window.innerWidth && window.innerHeight) {
 windowsWidth = window.innerWidth;
 windowsHeight = window.innerHeight;
}

but on iPad I get these size: 980 x 1080 (not the real 768 x 1024).

Thanks Mauro

[John]

Use the window.screen object.
For example, try this:

alert(window.screen.width + "x" + window.screen.height);