JS实现固定在右下角可展开收缩DIV层的方法

Z时代
2024-01-10
分类：综合

本文实例讲述了JS实现固定在右下角可展开收缩DIV层的方法。分享给大家供大家参考。具体实现方法如下：


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>JS实现固定在右下角可展开收缩的DIV层</title>
<style type="text/css">
<!--
*{margin:0;padding:0;}
body{text-align:center;}
#main{border:red 1px solid;width:1000px;height:1600px;margin:0 auto;}
#main #scroll{width:250px;height:150px;border:green 1px solid;text-align:left;position:absolute;visibility:hidden;}
#main #scroll #open{float:left;text-align:center;width:180px;}
#main #scroll #close{float:right;}
//-->
</style>
</head>
<body>
<div id="main">
仅实现核心部分，至于内容自己完善，或者继续美化一下，应该不错！
  <div id="scroll"><div id="open" onmouseover="openbox()"><a href="/" onclick="openbox()">欢迎光临</a><div id="close" class="zzsky"><marquee align="left" onmouseover="stop()" onmouseout="start()">欢迎提出宝贵建议！</marquee></div></div>
  <div id="close"><a href="#" onclick="closebox()">关闭</a>                  
<script type="text/javascript">
     <!--
       var scroll=document.getElementById("scroll")
       var main=document.getElementById("main")
       var open=document.getElementById("open")
       var close=document.getElementById("close")
       scroll.style.visibility="visible"
      function runright()
       {
         /*这里-4主要是为了显示的比较好，因为我设置了边框*/
         scroll.style.top=document.body.scrollTop+document.body.clientHeight-scroll.clientHeight-4+"px"
         scroll.style.left=document.body.scrollLeft+document.body.clientWidth-scroll.clientWidth-4+"px"
         /*隔一段时间执行这个函数*/
         setTimeout("runright()",30)
         }
      /*关闭:设置高度一直减*/
      function closebox()
      {
        scroll.style.height=scroll.offsetHeight-4+"px"
        if (scroll.offsetHeight>20)
         {
        setTimeout("closebox()",5)
         }
        else
         {
            close.style.visibility="hidden"
         }
      }
      function openbox()
      {
        if (scroll.offsetHeight<148)
         {
            close.style.visibility="visible"
        scroll.style.height=scroll.offsetHeight+2+"px"
        setTimeout("openbox()",5)
         }
      }
      runright();
     //-->
</script>
  </div>
</div>
</div>
</body>
</html>