css 滚动条 css层滚动条

时间:2021-03-17 人气:0

想了解css层滚动条的相关内容吗，在本文为您仔细讲解css 滚动条的相关知识和一些Code实例，欢迎阅读和指正，我们先划重点：css,层,滚动条，下面大家一起来学习吧。

<html> 
<head><title>层滚动条DIY - Powered by yexj00</title> 
<style> 
 
</style>

function getInfor(){ 
mx=event.clientX+document.documentElement.scrollLeft; 
my=event.clientY+document.documentElement.scrollTop;  
scrollbar_L=document.documentElement.clientLeft+$("outerDiv").style.pixelLeft+$("scroll_area").offsetLeft+$("scroll_bar").offsetLeft; 
scrollbar_T=document.documentElement.clientTop+$("outerDiv").style.pixelTop+$("scroll_area").offsetTop+$("scroll_bar").offsetTop; 
scrollbar_W=$("scroll_bar").offsetWidth; 
scrollbar_H=$("scroll_bar").offsetHeight; 
scrollarea_T=document.documentElement.clientTop+$("outerDiv").style.pixelTop+$("scroll_area").offsetTop; 
scrollarea_H=$("scroll_area").offsetHeight; 
}

function dragit(){ 
getInfor();

if(event.srcElement.id=="scroll_bar"){ 
  drag=true; 
  $("scroll_bar").style.background="#cccccc"; 
  startT=$("scroll_bar").style.pixelTop; 
  startY=event.clientY; 
 document.onmousemove=move; 
   } 
 } 
function move(){ 
if(drag==true){ 
$("scroll_bar").style.pixelTop=startT+event.clientY-startY; 
$("scroll_content").scrollTop=$("scroll_bar").style.pixelTop/$("scroll_area").offsetHeight*$("scroll_content").scrollHeight; 
if($("scroll_bar").style.pixelTop<=0){ $("scroll_bar").style.pixelTop=0} 
if($("scroll_bar").style.pixelTop>=(scrollarea_H-scrollbar_H)){

$("scroll_bar").style.pixelTop=scrollarea_H-scrollbar_H; 
 } 
return false; 
   }

}

document.onmousedown=dragit; 
document.onmouseup=new Function("drag=false;$('scroll_bar').style.background='#efefef'"); 
//--> 
</script> 
</head> 
<body onload="setbarHeight()"> 
<div id="outerDiv" style="position:absolute; left:100px; top:50px; width:130px; height:130px"> 
  <div id="scroll_content" style="position:absolute; padding:2px; left:2px; top:5px; width:100px; height:100px; border:1px solid #cccccc; overflow: hidden">

<script language="Javascript"> 
 
</script>

</div> 
  <div id="up_btt" style="position:absolute; left:104px; top:5px; width:8px; height:16px; background:#efefef; font-size:0px;border:1px outset #cccccc"></div> 
  <div id="scroll_area" style=" position:absolute; left:104px; top:22px; width:8px; height:66px;font-size:0px; background:#efefef"> 
      <div id="scroll_bar" style="position:absolute; left:0px; top:0px; width:8px; background:#efefef; font-size:0px;border:1px outset #cccccc"></div> 
  </div> 
  <div id="down_btt" style="position:absolute; left:104px; top:89px; width:8px; height:16px; background:#efefef;font-size:0px; border:1px outset #cccccc"></div> 
</div>

</body> 
</html>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]

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