javascript获取当前页面可视高度和宽度及浏览器宽度和高度的函数.pdf

javascript 得到当前页面可视高度和宽度

function getHeight (){

var yScroll ;

if ( window. innerHeight && window . scrollMaxY ) {

yScroll = window . innerHeight + window . scrollMaxY ;

} else if (document. body. scrollHeight > document. body. offsetHeight ){ // all but Explorer Mac

yScroll = document . body. scrollHeight ;

} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari

yScroll = document . body. offsetHeight ;

windowHeight = document . documentElement . clientHeight ;

} else if ( document. body) { // other Explorers

windowHeight = document . body. clientHeight ;

}

// for small pages with total height less then height of the viewport

if ( yScroll < windowHeight ){

pageHeight = windowHeight ;

} else {

pageHeight = yScroll ;

}

} else if ( document. body. scrollHeight > document. body. offsetHeight ){ // all but Explorer

Mac

xScroll = document . body. scrollWidth ;

} else {

xScroll = document . body. offsetWidth ;