js get page height and width compatible ie firefox chrome etc.

The code copy is as follows:

<script>

//Get page height

var yScroll = (document.documentElement.clientHeight >document.documentElement.clientHeight) ? document.documentElement.scrollHeight : document.documentElement.clientHeight;

alert(yScroll)

//Get page width

var xScroll=(document.documentElement.scrollWidth>document.documentElement.clientWidth) ? document.documentElement.scrollWidth : document.documentElement.scrollWidth;

alert(xScroll)

</script>