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jsp+javascript打造级连菜单

来源：互联网作者： rocket 2008-03-17/13:33

软件频道

编程学院

Jsp

实例解析

正文

<%@ page import="java.util.Date,yava.fileapp.*,java.sql.*;"
         contentType="text/html;charset=GB2312" pageEncoding="GB2312"
%>
<style>
.f9{ font-size:9pt; }
.bgc{ background-color:#AECAF9; color: #0033FF }
.buttons{font-family:Arial; font-size:13px; font-weight:bold; background-color:#6796E4; color:white; border-top: solid 2px #AACAFB;
border-bottom: solid 1px #4E7DC1;
border-left: solid 1px #AECAF9;
border-right: solid 1px #5679BD;
padding:1px;
margin:0px;}
</style>
<SCRIPT LANGUAGE="JavaScript">
<!--
function rv()
{
var val="";
for(i=0;i<combo_box.list2.length;i++){
   val+=","+combo_box.list2[i].value;
}
if(val.charAt(0)==","){
   val=val.substr(1,val.length);
}
opener.form1.frecname.value=val;
self.close();
}

//-->
</SCRIPT>
<body leftmargin="0" topmargin="0" marginwidth="0" marginheight="0">
<jsp:useBean id="user" scope="session" class="yava.fileapp.UserBean" />
<%
CDataSource ds=new CDataSource(); //数据联结Bean实例
java.sql.Connection conn=ds.getConnection();
java.sql.Statement stmt=null;
java.sql.ResultSet rs=null;
CDataCheck dc=new CDataCheck();
%>

<%
String sqlu="SELECT t1.fno, t1.fname, t2.fname AS fdept FROM tuser t1 LEFT OUTER JOIN TDept t2 ON t1.fdept = t2.fno order by t2.fname";
stmt=conn.createStatement();
rs=stmt.executeQuery(sqlu);
%>
<script language='Javascript'>
arr = new Array();
<% int temp=0;
while(rs.next())
{
%>
arr[<%=temp%>]=new Array("<%=rs.getString("fname")%>","<%=rs.getString("fdept")%>");
<%
temp = temp + 1;
}
%>
temp=<%=temp%>;
function ChangeLocation(id){
document.combo_box.city.length=0; //初始化第2级菜单的长度，下标从0开始
var i = 0;
document.combo_box.city.options[0]=new Option('-------','');
for(i=0;i<temp;i++){
if(arr[i][1]==id){//如果相等，证明在第2级里面有输入第1级组织的子集,arr[总数目][部门]
document.combo_box.city.options[document.combo_box.city.length] = new Option(arr[i][0], arr[i][0]);
}
}
}
</script>

<form name="combo_box">
<table border="0" cellspacing="0" cellpadding="0" height="210" width="59">
<tr height="24">
    <td bgcolor="#336699" class="buttons" align=center><font color=#ffffff>部门选择</font></td>
    <td bgcolor="#336699" class="buttons" align=center><font color=#ffffff>人名选择</font></td>
    <td bgcolor="#336699" class="buttons" align=center nowrap><font color=#ffffff>添加/移除</font></td>
    <td bgcolor="#336699" class="buttons" align=center><font color=#ffffff>最终人</font></td>
</tr>
<tr>
    <td>
<select multiple id=prov name="prov" onchange="ChangeLocation(combo_box.prov.options[combo_box.prov.selectedIndex].text);" style="width:150;height:200" class="bgc">
<option value="0">请选择部门 ---></option>
<%
    String sqld="SELECT * FROM tdept";
stmt=conn.createStatement();
rs=stmt.executeQuery(sqld);
while(rs.next())
{
%>
<option name="<%=rs.getString("fno")%>"><%=rs.getString("fname")%></option>
<%
}
%>
</select>
</td>
    <td>
<select multiple id=city style="width:150;height:200" class="bgc">
</select>
</td>
    <td nowrap align="center" class="bgc">
<input type="button" onClick="move(this.form.list2,this.form.city)" value="<<" class="buttons">
<input type="button" onClick="move(this.form.city,this.form.list2)" value=">>" class="buttons">
</td>
    <td>
<select multiple size="10" name="list2" style="width:150;height:200" class="bgc">
</select>
</td>
</tr>
    <tr class="bgc">
    <td colspan="4" align="center"><input type="button" name="button1" class="buttons" value="选好了！" onclick="rv();"></td>
</tr>
</table>
</form>