三级联动 学院 专业 班级 (这是三个表,用id号相互关联着) asp+js 求助:三级联动 学院 专业 班级 (这是三个表,用id号相互关联着) asp+js求具体思想..谢谢谢谢!有注释代码更佳!谢谢,谢谢! 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 http://www.365css.cn/post/274.html ASP+JS三级联动下拉菜单[asp无刷新三级联动,附有源码] 例子中是asp+js实现的三级无刷新下拉列表,(这里还有[四级(多级)联动下拉菜单],这个和下面程序实现相比不够灵活 )'肯定先要连接数据库了,不用说了'数据库结构'类别1表名称:a 字段:ID,Name 说明:ID为主键是类别1的ID值,Name为类别1的名称'类别2表名称:aa 字段:ID,aID,Name 说明:ID为主键是类别2的ID值,aID为所属类别1的ID值,Name为类别2的名称'类别3表名称:aaa 字段:ID,aID,aaID,Name 说明:ID为主键是类别3的ID值,aID为所属类别1的ID值,aaID为所属类别2的ID值,Name为类别3的名称=====test1.asp 你可以测试下,接收到的都是类别的ID值====<%response.write"1:"&Request.form("s1")&"<BR>"response.write"2:"&Request.form("s2")&"<BR>"response.write"3:"&Request.form("s3")&"<BR>"%>=========================================================<!-- 三级联动菜单 开始 --><script language="JavaScript"><!--<%'二级数据保存到数组Dim count2,rsClass2,sqlClass2set rsClass2=server.createobject("adodb.recordset")sqlClass2="select * from aa" rsClass2.open sqlClass2,conn,1,1%>var subval2 = new Array();//数组结构:一级根值,二级根值,二级显示值<%count2 = 0do while not rsClass2.eof%>subval2[<%=count2%>] = new Array('<%=rsClass2("aID")%>','<%=rsClass2("ID")%>','<%=rsClass2("Name")%>')<%count2 = count2 + 1rsClass2.movenextlooprsClass2.close%><%'三级数据保存到数组Dim count3,rsClass3,sqlClass3set rsClass3=server.createobject("adodb.recordset")sqlClass3="select * from aaa" rsClass3.open sqlClass3,conn,1,1%>var subval3 = new Array();//数组结构:二级根值,三级根值,三级显示值<%count3 = 0do while not rsClass3.eof%>subval3[<%=count3%>] = new Array('<%=rsClass3("aaID")%>','<%=rsClass3("ID")%>','<%=rsClass3("Name")%>')<%count3 = count3 + 1rsClass3.movenextlooprsClass3.close%>function changeselect1(locationid){ document.form1.s2.length = 0; document.form1.s2.options[0] = new Option('==请选择类别==',''); document.form1.s3.length = 0; document.form1.s3.options[0] = new Option('==请选择专题==',''); for (i=0; i<subval2.length; i++) { if (subval2[i][0] == locationid) {document.form1.s2.options[document.form1.s2.length] = new Option(subval2[i][2],subval2[i][1]);} }}function changeselect2(locationid){ document.form1.s3.length = 0; document.form1.s3.options[0] = new Option('==请选择专题==',''); for (i=0; i<subval3.length; i++) { if (subval3[i][0] == locationid) {document.form1.s3.options[document.form1.s3.length] = new Option(subval3[i][2],subval3[i][1]);} }}//--></script><form name="form1" method="post" action="test1.asp">三级联动:<%Dim count1,rsClass1,sqlClass1set rsClass1=server.createobject("adodb.recordset")sqlClass1="select * from a" rsClass1.open sqlClass1,conn,1,1%><select name="s1" onChange="changeselect1(this.value)"><option>==请选择频道==</option><%count1 = 0do while not rsClass1.eofresponse.write"<option value="&rsClass1("ID")&">"&rsClass1("Name")&"</option>"count1 = count1 + 1rsClass1.movenextlooprsClass1.close%></select><select name="s2" onChange="changeselect2(this.value)"> <option>==请选择类别==</option></select><select name="s3"> <option>==请选择专题==</option></select><input type="submit" name="Submit" value="提交"></form><!-- 三级联动菜单 结束 --> extjs 部署到linux 上后图片显示不了,用的nginx代理 动态树形菜单刷新问题 js中数字字符串转换成Long类型出错 javascript 变量名是另一个变量的值 请高手帮忙改下这段代码?谢谢。 大家看看百度空间这个相册效果是如何做出来的? 不想循环里面套循环,帮我看看怎么分开来解决 怎么制作动态菜单 如何得到本页中的所有表单对象? ajax中的消息头是啥回事 正则表达式 验证邮箱或手机号码 求1个在DIV中,点击头的按钮,横向滚动到最后的例子的问题
'肯定先要连接数据库了,不用说了
'数据库结构
'类别1表名称:a 字段:ID,Name 说明:ID为主键是类别1的ID值,Name为类别1的名称
'类别2表名称:aa 字段:ID,aID,Name 说明:ID为主键是类别2的ID值,aID为所属类别1的ID值,Name为类别2的名称
'类别3表名称:aaa 字段:ID,aID,aaID,Name 说明:ID为主键是类别3的ID值,aID为所属类别1的ID值,aaID为所属类别2的ID值,Name为类别3的名称=====test1.asp 你可以测试下,接收到的都是类别的ID值====
<%
response.write"1:"&Request.form("s1")&"<BR>"
response.write"2:"&Request.form("s2")&"<BR>"
response.write"3:"&Request.form("s3")&"<BR>"
%>=========================================================<!-- 三级联动菜单 开始 -->
<script language="JavaScript">
<!--
<%
'二级数据保存到数组
Dim count2,rsClass2,sqlClass2
set rsClass2=server.createobject("adodb.recordset")
sqlClass2="select * from aa"
rsClass2.open sqlClass2,conn,1,1
%>
var subval2 = new Array();
//数组结构:一级根值,二级根值,二级显示值
<%
count2 = 0
do while not rsClass2.eof
%>
subval2[<%=count2%>] = new Array('<%=rsClass2("aID")%>','<%=rsClass2("ID")%>','<%=rsClass2("Name")%>')
<%
count2 = count2 + 1
rsClass2.movenext
loop
rsClass2.close
%><%
'三级数据保存到数组
Dim count3,rsClass3,sqlClass3
set rsClass3=server.createobject("adodb.recordset")
sqlClass3="select * from aaa"
rsClass3.open sqlClass3,conn,1,1
%>
var subval3 = new Array();
//数组结构:二级根值,三级根值,三级显示值
<%
count3 = 0
do while not rsClass3.eof
%>
subval3[<%=count3%>] = new Array('<%=rsClass3("aaID")%>','<%=rsClass3("ID")%>','<%=rsClass3("Name")%>')
<%
count3 = count3 + 1
rsClass3.movenext
loop
rsClass3.close
%>function changeselect1(locationid)
{
document.form1.s2.length = 0;
document.form1.s2.options[0] = new Option('==请选择类别==','');
document.form1.s3.length = 0;
document.form1.s3.options[0] = new Option('==请选择专题==','');
for (i=0; i<subval2.length; i++)
{
if (subval2[i][0] == locationid)
{document.form1.s2.options[document.form1.s2.length] = new Option(subval2[i][2],subval2[i][1]);}
}
}function changeselect2(locationid)
{
document.form1.s3.length = 0;
document.form1.s3.options[0] = new Option('==请选择专题==','');
for (i=0; i<subval3.length; i++)
{
if (subval3[i][0] == locationid)
{document.form1.s3.options[document.form1.s3.length] = new Option(subval3[i][2],subval3[i][1]);}
}
}
//-->
</script><form name="form1" method="post" action="test1.asp">三级联动:
<%
Dim count1,rsClass1,sqlClass1
set rsClass1=server.createobject("adodb.recordset")
sqlClass1="select * from a"
rsClass1.open sqlClass1,conn,1,1
%>
<select name="s1" onChange="changeselect1(this.value)">
<option>==请选择频道==</option>
<%
count1 = 0
do while not rsClass1.eof
response.write"<option value="&rsClass1("ID")&">"&rsClass1("Name")&"</option>"
count1 = count1 + 1
rsClass1.movenext
loop
rsClass1.close
%>
</select><select name="s2" onChange="changeselect2(this.value)">
<option>==请选择类别==</option>
</select><select name="s3">
<option>==请选择专题==</option>
</select>
<input type="submit" name="Submit" value="提交"></form><!-- 三级联动菜单 结束 -->