当前位置: 首页 > 图文教程 > 网络编程 > Javascript > 练习:鼠标感应伸缩隐藏层

Javascript
Add a Table to a Word Document
Add Formatted Text to a Word Document
用jscript实现新建word文档
用jscript实现新建和保存一个word文档
Open and Print a Word Document
Use Word to Search for Files
Convert Seconds To Hours
Sample script that deletes a SQL Server database
Sample script that displays all of the users in a given SQL Server DB
firefox中用javascript实现鼠标位置的定位
div+css实现鼠标放上去,背景跟图片都会变化。
Locate a File Using a File Open Dialog Box
Save a File Using a File Save Dialog Box
用jscript实现列出安装的软件列表
List the Stored Procedures in a SQL Server database
Display SQL Server Login Mode
Display SQL Server Version Information
List all the Databases on a SQL Server
用jscript启动sqlserver
Stop SQL Server

Javascript 中的 练习:鼠标感应伸缩隐藏层


出处:互联网   整理: 软晨网(RuanChen.com)   发布: 2009-09-28   浏览: 259 ::
收藏到网摘: n/a

  鼠标感应伸缩隐藏层,实际上我没完全理解这个例子,但是相信以后会用的到,所以先把code贴上来,未来我要去理解的两个参数方法setInterval() ,clearInterval(),目前还不是很清楚这两个的用法 。如果有谁会欢迎留言解答,不胜感激。

<!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=utf-8" />
<title>无标题文档</title>
<style type="text/css">
div{width:200px;word-break:break-all;border:1px solid red;overflow:hidden; cursor:pointer}
</style>
<script type="text/javascript">
var t = true;
var obj,a;
function openclose(openclose){
  var h = obj.offsetHeight;
  h += openclose*5;
  if(h>=150){
   clearInterval(a);
   obj.style.height = "150px";
   t = true;
  }
  else if(h<=50){
   clearInterval(a);
   obj.style.height = "50px";
   t = true;
  }
  else obj.style.height = h + "px";
 }
function getlink(){
 obj.onmouseout = function(){
   clearInterval(a);
   a = setInterval("openclose(-1)" , 5);
  }
 obj.onmouseover = function(){
   clearInterval(a);
   a = setInterval("openclose(1)" , 5);
  }
}
window.onload = function()
{
 obj = document.getElementById("box")
 obj.style.height = "50px";
 getlink();
}
</script>
</head>
<body>
 
 <div id="box">
<img src="http://www.ruanchen.com/mages/logo.gif">
</div>
 
</body>
</html>