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HTML+js实现:鼠标移入div后哦显示另一个div

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代码:

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'test.jsp' starting page</title>
    
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">

	<style type="text/css">
.id1 {
		width: 270px;
		height: 35px;
		background-color: teal;	
		display: block;	
	}		
.id2 {
		width: 270px;
		height: 70px;
		background-color: teal;
		line-height:35px;
		display: none;		
	}
.id3 {
		width: 270px;
		height: 70px;
		background-color: teal;	
		line-height:35px;	
		display: block;	
	}	
	</style>
  </head>  
  <body>
<script language="javascript"> 

function displayDiv1(){
	
	var oDiv1=document.getElementById("id1");
	var oDiv2=document.getElementById("id2");
	oDiv1.className="id1";
	oDiv2.className="id2";

}
function displayDiv2(){
	
	var oDiv2=document.getElementById("id2");
	var oDiv1=document.getElementById("id1");
	oDiv1.className="id2";
	oDiv2.className="id3";
}

</script> 

<div id="id1" class="id1" onmouseover="displayDiv2()">
层一
</div>
<div id="id2" class="id2"  onmouseover="displayDiv2() onmouseout="displayDiv1()">
层二
</div>


  </body>
</html>

 

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