jsp+javascript打造级连菜单的实例代码_Javascript教程-查字典教程网

复制代码代码如下:

<%@ 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>

<!--

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>

<jsp(SUN企业级应用的首选):useBean id="user" scope="session" />

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);

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>