JavaScript 獲得頁面地區大小的代碼
getPageSize函數返回一個數組,前兩個是整個頁面的寬度和高度,後兩個是頁面視窗的寬度和高度
function getPageSize()
{
var xScroll, yScroll;
if (window.innerHeight && window.scrollMaxY)
{
xScroll = document.body.scrollWidth;
yScroll = window.innerHeight + window.scrollMaxY;
}
else if (document.body.scrollHeight > document.body.offsetHeight)
{
xScroll = document.body.scrollWidth;
yScroll = document.body.scrollHeight;
}
else
{
xScroll = document.body.offsetWidth;
yScroll = document.body.offsetHeight;
}
var windowWidth, windowHeight;
if (self.innerHeight)
{
windowWidth = self.innerWidth;
windowHeight = self.innerHeight;
}
else if (document.documentElement && document.documentElement.clientHeight)
{
windowWidth = document.documentElement.clientWidth;
windowHeight = document.documentElement.clientHeight;
}
else if (document.body)
{
windowWidth = document.body.clientWidth;
windowHeight = document.body.clientHeight;
}
if (yScroll < windowHeight)
{
pageHeight = windowHeight;
}
else
{
pageHeight = yScroll;
}
if (xScroll < windowWidth)
{
pageWidth = windowWidth;
}
else
{
pageWidth = xScroll;
}
arrayPageSize = new Array(pageWidth, pageHeight, windowWidth, windowHeight);
return arrayPageSize;
}