Posted in Javascript onMarch 10, 2011
<!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/ <!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"> <HEAD> <TITLE>随滚动条移动的层 </TITLE> <META HTTP-EQUIV="Content-Type" CONTENT="text/html" charset="gb2312"> </HEAD> <style> <!-- .div{ position: absolute; border: 2px solid red; background-color: #EFEFEF; line-height:90px; font-size:12px; z-index:1000; } --> </style> <BODY> <div id="Javascript.Div1" class="div" style="width: 240px; height:90px" align="center">正中...</div> <SCRIPT LANGUAGE="JavaScript"> function sc1(){ document.getElementById("Javascript.Div1").style.top=(document.documentElement.scrollTop+(document.documentElement.clientHeight-document.getElementById("Javascript.Div1").offsetHeight)/2)+"px"; document.getElementById("Javascript.Div1").style.left=(document.documentElement.scrollLeft+(document.documentElement.clientWidth-document.getElementById("Javascript.Div1").offsetWidth)/2)+"px"; } </SCRIPT> <div id="Javascript.Div2" class="div" style="width: 240px; height:90px" align="center">左上...</div> <SCRIPT LANGUAGE="JavaScript"> function sc2(){ document.getElementById("Javascript.Div2").style.top=(document.documentElement.scrollTop)+"px"; document.getElementById("Javascript.Div2").style.left=(document.documentElement.scrollLeft)+"px"; } </SCRIPT> <div id="Javascript.Div3" class="div" style="width: 240px; height:90px" align="center">左下...</div> <SCRIPT LANGUAGE="JavaScript"> function sc3(){ document.getElementById("Javascript.Div3").style.top=(document.documentElement.scrollTop+document.documentElement.clientHeight-document.getElementById("Javascript.Div3").offsetHeight)+"px"; document.getElementById("Javascript.Div3").style.left=(document.documentElement.scrollLeft)+"px"; } </SCRIPT> <div id="Javascript.Div4" class="div" style="width: 240px; height:90px" align="center">右上...</div> <SCRIPT LANGUAGE="JavaScript"> function sc4(){ document.getElementById("Javascript.Div4").style.top=(document.documentElement.scrollTop)+"px"; document.getElementById("Javascript.Div4").style.left=(document.documentElement.scrollLeft+document.documentElement.clientWidth-document.getElementById("Javascript.Div4").offsetWidth)+"px"; } </SCRIPT> <div id="Javascript.Div5" class="div" style="width: 240px; height:90px" align="center">右下...</div> <SCRIPT LANGUAGE="JavaScript"> function sc5(){ document.getElementById("Javascript.Div5").style.top=(document.documentElement.scrollTop+document.documentElement.clientHeight-document.getElementById("Javascript.Div5").offsetHeight)+"px"; document.getElementById("Javascript.Div5").style.left=(document.documentElement.scrollLeft+document.documentElement.clientWidth-document.getElementById("Javascript.Div5").offsetWidth)+"px"; } </SCRIPT> <SCRIPT LANGUAGE="JavaScript"> <!-- function scall(){ sc1();sc2();sc3();sc4();sc5(); } window.onscroll=scall; window.onresize=scall; window.onload=scall; //--> </SCRIPT> <div style="position: absolute; top: 0px; left: 0px; width: 10000px; height: 4000px;"></div> </BODY> </HTML>
js+css使DIV始终居于屏幕中间 左下 左上 右上 右下的代码集合
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