Created
August 21, 2014 07:05
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IE6を含めた画面のサイズ、画面のスクロール領域を含むサイズの取得関数
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function getPageSize() { | |
var xScroll, yScroll; | |
if (window.innerHeight && window.scrollMaxY) { | |
xScroll = window.innerWidth + window.scrollMaxX; | |
yScroll = window.innerHeight + window.scrollMaxY; | |
} else if (document.body.scrollHeight > document.body.offsetHeight) { // all but Explorer Mac | |
xScroll = document.body.scrollWidth; | |
yScroll = document.body.scrollHeight; | |
} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari | |
xScroll = document.body.offsetWidth; | |
yScroll = document.body.offsetHeight; | |
} | |
var windowWidth, windowHeight; | |
if (self.innerHeight) { // all except Explorer | |
if (document.documentElement.clientWidth) { | |
windowWidth = document.documentElement.clientWidth; | |
} else { | |
windowWidth = self.innerWidth; | |
} | |
windowHeight = self.innerHeight; | |
} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode | |
windowWidth = document.documentElement.clientWidth; | |
windowHeight = document.documentElement.clientHeight; | |
} else if (document.body) { // other Explorers | |
windowWidth = document.body.clientWidth; | |
windowHeight = document.body.clientHeight; | |
} | |
// for small pages with total height less then height of the viewport | |
if (yScroll < windowHeight) { | |
pageHeight = windowHeight; | |
} else { | |
pageHeight = yScroll; | |
} | |
// for small pages with total width less then width of the viewport | |
if (xScroll < windowWidth) { | |
pageWidth = xScroll; | |
} else { | |
pageWidth = windowWidth; | |
} | |
var arrayPageSize = {pageWidth: pageWidth,pageHeight: pageHeight,winWidth: windowWidth,winHeight: windowHeight}; | |
return arrayPageSize; | |
} |
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