Javascript擷取頁面寬度,高度,視窗寬度,高度

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上載者:User

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="gb2312">
<head>
<head>
<title> 代碼執行個體:擷取頁面滾動高度 scrollTop(For: IE5.0+、Firefox1.06+ ...) </title>
<meta http-equiv="content-type" content="text/html; charset=gb2312" />
<meta name="author" content="楓岩,CnLei.y.l@gmail.com">
<meta name="copyright" content="http://www.cnlei.com" />
<meta name="description" content="擷取頁面滾動高度 scrollTop(For: IE5.0+、Firefox1.06+ ...)" />
<script type="text/javascript">
var w3c=(document.getElementById)? true: false;
var agt=navigator.userAgent.toLowerCase();
var ie = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1) && (agt.indexOf("omniweb") == -1));

function IeTrueBody(){
return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body;
}

function GetScrollTop(){
 return ie ? IeTrueBody().scrollTop : window.pageYOffset;
}
function getPageScroll(){
  var yScroll;
  if (self.pageYOffset) {
    yScroll = self.pageYOffset;
  } else if (document.documentElement && document.documentElement.scrollTop){   // Explorer 6 Strict
    yScroll = document.documentElement.scrollTop;
  } else if (document.body) {// all other Explorers
    yScroll = document.body.scrollTop;
  }
  arrayPageScroll = new Array('',yScroll) 
  return arrayPageScroll;
}
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){ // 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
    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;
  }
  if(xScroll < windowWidth){  
    pageWidth = windowWidth;
  } else {
    pageWidth = xScroll;
  }
  arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) 
  return arrayPageSize;
 //return pageHeight;
}
</script>
</head>
<body>
<p style="height:250px;">&nbsp;</p>
<p><a href="javascript:alert(GetScrollTop());">GetScrollTop()捲軸高度1</a></p>
<p><a href="javascript:alert(getPageScroll()[1]);">getPageScroll()[1]捲軸高度2</a></p>
<p><a href="javascript:alert(getPageSize()[0].toString()+'/'+getPageSize()[1].toString()+'/'+getPageSize()[2].toString()+'/'+getPageSize()[3].toString());">getPageSize()頁面寬度,高度,視窗寬度,高度</a></p>
<p style="height:250px;">&nbsp;</p>
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</body>
</html>
/Files/chinhr/PageHeight.rar

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