一个关于漂浮广告代码与滚动条的问题

答案:2 悬赏:30 手机版

解决时间 2021-04-28 14:30

提问者网友：趣果有间
2021-04-28 00:17

<html >
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>

</head>

<body>
<DIV id=img1 style="Z-INDEX: 100; LEFT: 2px; WIDTH: 59px; POSITION: absolute; TOP: 43px; HEIGHT: 61px;
visibility: visible;"><a href=" http://www.makewing.com/lanren" target="_blank"><img src="pic.gif" width="80" height="80" border="0"></a></DIV>
<div style="height:2000px">我是一个DIV 我的长度是2000px</div>
<SCRIPT >
var xPos = 300;
var yPos = 200;
var step = 1;
var delay = 30;
var height = 0;
var Hoffset = 0;
var Woffset = 0;
var yon = 0;
var xon = 0;
var pause = true;
var interval;
document.getElementById("img1").style.top = yPos;
function changePos()
{
width = document.body.clientWidth;
height = document.body.clientHeight;
Hoffset = document.getElementById("img1").offsetHeight;
Woffset = document.getElementById("img1").offsetWidth;
document.getElementById("img1").style.left = xPos + document.body.scrollLeft;
document.getElementById("img1").style.top = yPos + document.body.scrollTop;
if (yon)
  {yPos = yPos + step;}
else
  {yPos = yPos - step;}
if (yPos < 0)
  {yon = 1;yPos = 0;}
if (yPos >= (height - Hoffset))
  {yon = 0;yPos = (height - Hoffset);}
if (xon)
  {xPos = xPos + step;}
else
  {xPos = xPos - step;}
if (xPos < 0)
  {xon = 1;xPos = 0;}
if (xPos >= (width - Woffset))
  {xon = 0;xPos = (width - Woffset);   }
}

function start()
{
document.getElementById("img1").visibility = "visible";
  interval = setInterval('changePos()', delay);
}
function pause_resume()
{
  if(pause)
  {
   clearInterval(interval);
   pause = false;}
  else
  {
   interval = setInterval('changePos()',delay);
   pause = true;
   }
  }
start();
</SCRIPT>
</body>
</html>

这段代码是没问题的运行的时候拖动滚动条浮动的图片也会随滚动条变化

但是在最上面加上<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" " http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

这段代码那么滚动条往下拉的时候就看不到浮动的图片了怎么调整使图片随滚动条的变化而保持一直可见的状态

最佳答案

五星知识达人网友：执傲
2021-04-28 01:40

<!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>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>

</head>

<body>
<DIV id=img1 style="Z-INDEX: 100; LEFT: 2px; WIDTH: 59px; POSITION: absolute; TOP: 43px; HEIGHT: 61px;
visibility: visible;"><a href=" http://www.makewing.com/lanren" target="_blank"><img src="pic.gif" width="80" height="80" border="0"></a></DIV>
<div style="height:2000px">我是一个DIV 我的长度是2000px</div>
<SCRIPT >
var xPos = 300;
var yPos = 200;
var step = 1;
var delay = 30;
var height = 0;
var Hoffset = 0;
var Woffset = 0;
var yon = 0;
var xon = 0;
var pause = true;
var interval;
document.getElementById("img1").style.top = yPos;
function changePos()
{
width = document.body.clientWidth;
height = document.body.clientHeight;
Hoffset = document.getElementById("img1").offsetHeight;
Woffset = document.getElementById("img1").offsetWidth;
document.getElementById("img1").style.left = xPos + document.documentElement.scrollLeft;
document.getElementById("img1").style.top = yPos + document.documentElement.scrollTop;
if (yon)
{yPos = yPos + step;}
else
{yPos = yPos - step;}
if (yPos < 0)
{yon = 1;yPos = 0;}
if (yPos >= (height - Hoffset))
{yon = 0;yPos = (height - Hoffset);}
if (xon)
{xPos = xPos + step;}
else
{xPos = xPos - step;}
if (xPos < 0)
{xon = 1;xPos = 0;}
if (xPos >= (width - Woffset))
{xon = 0;xPos = (width - Woffset);   }
}

function start()
{
   document.getElementById("img1").visibility = "visible";
interval = setInterval('changePos()', delay);
}
function pause_resume()
{
if(pause)
{
   clearInterval(interval);
   pause = false;}
else
{
   interval = setInterval('changePos()',delay);
   pause = true;
   }
}
start();
</SCRIPT>
</body>
</html>

全部回答

1楼网友：渊鱼
2021-04-28 01:51

http://www.dabaoku.com/texiao/，这个是关于网页各种特效的网站，你可以看看

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