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js 右側浮動層效果實作程式碼(跟隨滾動)_javascript技巧

WBOY

發布： 2016-05-16 15:30:45

原創

1351 人瀏覽過

實作程式碼一、

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "
<html>
<head>
 <meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
 <title>无标题文档</title>
 <!--***********开始*************-->

 <script type="text/javascript">
  //<![CDATA[ 
  var tips; var theTop = 200/*这是默认高度,越大越往下*/; var old = theTop;
  function initFloatTips() {
   tips = document.getElementById('floatTips');
   moveTips();
  };
  function moveTips() {
   var tt = 50;
   if (window.innerHeight) {
    pos = window.pageYOffset
   }
   else if (document.documentElement && document.documentElement.scrollTop) {
    pos = document.documentElement.scrollTop
   }
   else if (document.body) {
    pos = document.body.scrollTop;
   }
   pos = pos - tips.offsetTop + theTop;
   pos = tips.offsetTop + pos / 10;
   if (pos < theTop) pos = theTop;
   if (pos != old) {
    tips.style.top = pos + "px";
    tt = 10;
   }
   old = pos;
   setTimeout(moveTips, tt);
  }
  //!]]> 
 </script>

 <style type="text/css">
  .floatTips
  {
   position: absolute;
   border: solid 1px #777;
   padding: 3px;
   top: 250px;
   right: 5px;
   width: 30px;
   height: 300px;
   background: #cccccc;
   color: white;
  }
  .showDiv
  {
   position: absolute;
   border: solid 1px #777;
   padding: 3px;
   top: 250px;
   right: 5px;
   width: 300px;
   height: 300px;
   background: #cccccc;
   color: white;
  }
 </style>
 <script type="text/javascript">
  function FunOnmouseUp() {
   var objFloatTips = $("floatTips");
   var objActivityContext = $("activityContext");
   objFloatTips.className = "showDiv";
   objActivityContext.style.display = "";
  }
  function FunMouseOut() {
   var objFloatTips = $("floatTips");
   var objActivityContext = $("activityContext");
   objFloatTips.className = "floatTips";
   objActivityContext.style.display = "none";
  }

  function $(objID) {
   return document.getElementById(objID);
  }
 </script>

</head>
<body onload="initFloatTips()">
 <div id="floatTips" onmouseover="FunOnmouseUp()" onmouseout="FunMouseOut()" class="floatTips">
  最新的活动
  <div id="activityContext" style="display: none">
   显示最新的活动
  </div>
 </div>
 <!--**********结束***************-->
 <table width="100%" border="0" cellpadding="0" cellspacing="0" bgcolor="#F7F7F7">
  <tr>
   <td height="2101">
   </td>
  </tr>
 </table>
</body>
</html>

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如果有時間的話會稍作美化然後加上動畫效果應該就能算是個不錯的浮動隱藏層了。

方法二、

一、把以下程式碼插入標籤中：

 <div id="FloatDIV" style="position: absolute;top: 0px; border-right: activeborder 1px solid; border-top: activeborder 1px solid; border-left: activeborder 1px solid; border-bottom: activeborder 1px solid;">
   浮动层示例：<br />
        <a target="_blank" href="tencent://message/&#63;uin=101535223&Site=http://www.jb51.net&Menu=yes"><img border="0" src="http://wpa.qq.com/pa&#63;p=1:101535223:3" alt="有事您说话"></a>
 </div>

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二、把以下程式碼插到標籤之後，設定MarginLeft、MarginTop、Width、Heigth四個變數的值

<script language="javascript" type="text/javascript">
var MarginLeft = 30; //浮动层离浏览器右侧的距离
var MarginTop = 50;  //浮动层离浏览器顶部的距离
var Width = 120;  //浮动层宽度
var Heigth= 45;  //浮动层高度

//设置浮动层宽、高
function Set()
{
 document.getElementById("FloatDIV").style.width = Width;
 document.getElementById("FloatDIV").style.height = Heigth;
}

//实时设置浮动层的位置
function Move()
{
 document.getElementById("FloatDIV").style.top = document.documentElement.scrollTop + MarginTop;
 document.getElementById("FloatDIV").style.left = document.documentElement.clientWidth - Width - MarginLeft;
 setTimeout("Move();",100);
}

Set();
Move();
</script>

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