JavaScript添加随滚动条滚动窗体的方法

前端技术 2023/09/10 JavaScript

本文实例讲述了JavaScript中添加随滚动条滚动窗体的方法。分享给大家供大家参考，具体如下：

两种实现方式：

第一种：

<script type=/\"text/javascript/\">
function scrollImg(){
 var posX,posY;
 if (window.innerHeight) {
 posX = window.pageXOffset;
 posY = window.pageYOffset;
 }
 else if (document.documentElement && document.documentElement.scrollTop) {
 posX = document.documentElement.scrollLeft;
 posY = document.documentElement.scrollTop;
 }
 else if (document.body) {
 posX = document.body.scrollLeft;
 posY = document.body.scrollTop;
 }
 var ad=document.getElementById(/\"ad/\");
ad.style.top=(posY+500)+/\"px/\";
// ad.style.left=(posX+500)+/\"px/\";
ad.style.left=/\"90%/\";
 setTimeout(/\"scrollImg()/\",100);
}
</script>
<div id=/\"ad/\" style=/\"position:absolute;background:#606060;width:100px;height:100px;border:1px dotted #000;line-height:100px;text-align:center; left: 103px; top: 911px;/\">此广告位招租</div>
<script type=/\"text/javascript/\">
scrollImg();
</script>

第二种：

<html>
<head>
 <meta http-equiv=/\"Content-Type/\" content=/\"text/html; charset=gb2312/\">
 <title>Drag and Drop example</title>
 <script language=/\"javascript/\">
function picsize(obj,MaxWidth){
img=new Image();
img.src=obj.src;
if (img.width>MaxWidth)
{
 return MaxWidth;
}
else
{
 return img.width;
}
}
function CloseQQ()
{
divStayTopleft.style.display=/\"none/\";
return true; 
}
var online= new Array();
 </script>
</head>
<body>
 <div id=/\"divStay/\" style=/\"position: absolute/\">
 <table cellspacing=/\"0/\" cellpadding=/\"0/\" width=/\"100%/\" border=/\"0/\">
  <tbody>
  <tr>
   <td valign=/\"top/\" width=/\"7%/\">
   </td>
  </tr>
  </tbody>
 </table>
 </div>
 <div id=/\"divStayTopleft/\" style=/\"position: absolute/\">
 <table cellspacing=/\"0/\" cellpadding=/\"0/\" width=/\"109/\" border=/\"0/\">
  <tr>
  <td colspan=/\"3/\">
   <a onclick=/\"CloseQQ()/\" href=/\"javascript:;/\" shape=/\"circle/\" coords=/\"91,16,12/\">
   <img height=/\"34/\" src=/\"images/qq_top.gif/\" width=/\"109/\" usemap=/\"#Map/\"
    border=/\"0/\"></a></td>
  </tr>
  <tr>
  <td width=/\"6/\">
   <img height=/\"100/\" src=/\"images/qq_life.gif/\" width=/\"6/\"></td>
  <td valign=/\"top/\" width=/\"96/\" background=/\"sto/qq_bg.gif/\">
   <table cellspacing=/\"0/\" cellpadding=/\"0/\" width=/\"90/\" align=/\"center/\" border=/\"0/\">
   <tr>
    <td height=/\"30/\">
    <table cellspacing=/\"0/\" cellpadding=/\"0/\" width=/\"90/\" border=/\"0/\">
     <tr>
     <td>
      <img height=/\"13/\" src=/\"images/qq_ico1.gif/\" width=/\"16/\"><span
      class=/\"font_12/\"> <span style=/\"font-size: 9pt/\">客户服务</span></span></td>
     </tr>
    </table>
    </td>
   </tr>
   <tr>
    <td>
    <table border=/\"0/\" width=/\"100%/\" cellpadding=/\"2/\" id=/\"table47/\">
     <tr>
     <td width=/\"15/\" valign=/\"top/\" height=/\"23/\">
      <img border=/\"0/\" src=/\"images/qq_v01.gif/\" width=/\"16/\" height=/\"16/\"></td>
     <td valign=/\"bottom/\">
      <script>document.write(/\"<a target=blank href=tencent://message/?uin=178010108&Site=phpstudy&Menu=yes><img border=0 SRC=http://wpa.qq.com/pa?p=1:615050000:10 alt=[phpstudy]></a>/\");</script>
     </td>
     </tr>
    </table>
    </td>
   </tr>
   <tr>
    <td>
    </td>
   </tr>
   <tr>
    <td>
    <table border=/\"0/\" width=/\"100%/\" cellpadding=/\"2/\" id=/\"table1/\">
     <tr>
     <td width=/\"15/\" valign=/\"top/\" height=/\"23/\">
      <img border=/\"0/\" src=/\"images/qq_n01.gif/\" width=/\"16/\" height=/\"16/\"></td>
     <td valign=/\"bottom/\">
      <script>document.write(/\"<a target=blank href=tencent://message/?uin=251922268&Site=网页特效&Menu=yes><img border=0 SRC=http://wpa.qq.com/pa?p=1:43486831:10 alt=[QQQQQ]></a>/\");</script>
     </td>
     </tr>
    </table>
    </td>
   </tr>
   <tr>
    <td>
    </td>
   </tr>
   </table>
  </td>
  <td width=/\"7/\">
   <img height=/\"100/\" src=/\"images/qq_right.gif/\" width=/\"7/\"></td>
  </tr>
  <tr>
  <td colspan=/\"3/\">
   <img height=/\"30/\" src=/\"images/qq_bottom1.gif/\" width=/\"109/\"></td>
  </tr>
  <tr>
  <td colspan=/\"3/\">
   <img height=/\"33/\" src=/\"images/qq_logo.gif/\" width=/\"109/\"></td>
  </tr>
 </table>
 </div>
 <script type=/\"text/javascript/\">
function FloatTop()
{
var startX1 =document.body.offsetWidth-125 ,startY1 = 5;
var startX2 =0,startY2 = 95;
var ns = (navigator.appName.indexOf(/\"Netscape/\") != -1);
var d = document;
function ml(id,startX,startY)
{
var el=d.getElementById?d.getElementById(id):d.all?d.all[id]:d.layers[id];
if(d.layers)el.style=el;
el.sP=function(x,y){this.style.left=x;this.style.top=y;};
el.x = startX;
el.y = startY;
return el;
}
window.stayTopLeft=function()
{
var pY = ns ? pageYOffset : document.body.scrollTop;
ftlObj.y += (pY + startY1 - ftlObj.y)/8;
ftlObj1.y += (pY + startY2 - ftlObj1.y)/8;
ftlObj.sP(document.body.scrollLeft+document.body.offsetWidth-125, ftlObj.y);
ftlObj1.sP(ftlObj1.x, ftlObj1.y);
setTimeout(/\"stayTopLeft()/\", 30);
}
// ftlObj = ml(/\"divStay/\",document.body.scrollLeft+document.body.offsetWidth-125,0);
// ftlObj1 = ml(/\"divStayTopLeft/\",0,30);
ftlObj = ml(/\"divStay/\",(document.body.scrollLeft+document.body.offsetWidth)/2+379,0);
ftlObj1 = ml(/\"divStayTopLeft/\",(document.body.scrollLeft+document.body.offsetWidth)/2+379,30);
stayTopLeft();
}
FloatTop();
 </script>
</body>
</html>

更多关于JavaScript相关内容感兴趣的读者可查看本站专题：《JavaScript查找算法技巧总结》、《JavaScript动画特效与技巧汇总》、《JavaScript错误与调试技巧总结》、《JavaScript数据结构与算法技巧总结》、《JavaScript遍历算法与技巧总结》及《JavaScript数学运算用法总结》

希望本文所述对大家JavaScript程序设计有所帮助。

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