Get the window height

Question

This is frustrating me. It should be something really simple but I can't get it to work in IE. I want to get the height of the current window: Not the scroll height, not the document height, but the actual window height. I've tried window.innerHeight which returns undefined and document.documentElement.clientHeight which gives the scroll height.

Answer 1

For current browsers

window.innerHeight  

For IE 8 and lower, use

document.documentElement.offsetHeight; 

If you need older browsers, use:

var height = "innerHeight" in window                 ? window.innerHeight                : document.documentElement.offsetHeight;