有简单方法实现3级联动上拉框选择刷新数据而不刷新页面不

有简单方法实现3级联动下拉框选择刷新数据而不刷新页面不？


能否通过修改这下面的代码实现不刷新页面而刷新数据呢？

HTML code

<select name="type" onChange="form1.submit()">          <option value="0"<%if nowtype="0" then%> selected="selected"<%end if%>>THDS</option>        <option value="1"<%if nowtype="1" then%> selected="selected"<%end if%>>TFDS</option>        <option value="2"<%if nowtype="2" then%> selected="selected"<%end if%>>TPDS</option>        <option value="3"<%if nowtype="3" then%> selected="selected"<%end if%>>TADS</option>        <option value="4"<%if nowtype="4" then%> selected="selected"<%end if%>>AEI</option>        <option value="5"<%if nowtype="5" then%> selected="selected"<%end if%>>HMIS</option>        <option value="6"<%if nowtype="6" then%> selected="selected"<%end if%>>电动脱轨器</option>        <option value="7"<%if nowtype="7" then%> selected="selected"<%end if%>>手持机</option>        <option value="8"<%if nowtype="8" then%> selected="selected"<%end if%>>智能风表</option>        <option value="9"<%if nowtype="9" then%> selected="selected"<%end if%>>办公网络</option>        </select></td>        </tr>          </form>      <form name="form2">      <input type="hidden" name="type" value="<%=nowtype%>">      <tr>        <td align="right" height="30">故障所属大类：</td>        <td class="category">    <%    sql="select * from money_bigclass where type="&nowtype&" order by id"    set rs_bigclass=conn.execute(sql)    if rs_bigclass.eof then    %>    <script language="javascript">      alert("请先添加帐务大类！")      window.location.href="../money/bigclass_add.asp"    </script>    <%      response.end    end if    nowbigclass=request("bigclass")    if nowbigclass="" then      nowbigclass=rs_bigclass("id")    end if    %>      <select name="bigclass" onChange="form2.submit()">        <%    do while rs_bigclass.eof=false    %>        <option value="<%=rs_bigclass("id")%>"<%if trim(cstr(rs_bigclass("id")))=nowbigclass then%> selected="selected"<%end if%>><%=rs_bigclass("bigclass")%></option>        <%      rs_bigclass.movenext    loop    %>

[解决办法]
你的问题还没解决呀。想要最简单那就把所有分类输出形式json数组，给select绑定onchange事件那就解决了。
[解决办法]
多级下拉 我现在都用ajax来完成
[解决办法]
即兴给你写的例子：

HTML code

一级：<select name="cat1" id="cat1"></select>二级：<select name="cat2" id="cat2"></select>三级：<select name="cat3" id="cat3"></select><script type="text/javascript">var json=[    {name:"一级1",id:1,pid:0},    {name:"一级2",id:2,pid:0},    {name:"一级3",id:3,pid:0},    {name:"二级1-1",id:4,pid:1},    {name:"二级1-2",id:5,pid:1},    {name:"二级1-3",id:6,pid:1},    {name:"二级2-1",id:7,pid:2},    {name:"二级3-1",id:8,pid:3},    {name:"三级1-1-1",id:9,pid:4},    {name:"三级1-1-2",id:10,pid:4},    {name:"三级1-2-2",id:11,pid:5},    {name:"三级1-2-3",id:12,pid:5},    {name:"三级1-3-3",id:13,pid:6},    {name:"三级1-2-1",id:14,pid:7},    {name:"三级1-2-2",id:15,pid:7},    {name:"三级1-3-1",id:16,pid:8},    {name:"三级1-3-2",id:17,pid:8}];    $(function(){        set_select(0,1);        $("#cat1,#cat2").change(function(){            var i=($(this).attr("id")).replace("cat","");            set_select($(this).val(),parseInt(i)+1);        });    });    function set_select(id,ii){        var b=false,list="";        $.each(json,function(i,n){            if(n.pid==id){                if(!b)b = n.id;                list+="<option value='"+ n.id +"'>"+ n.name +"</option>";            }        });        $("#cat"+ii).html(list);        ii++;        if(b&&ii<=3){            set_select(b,ii);        }    }</script> 
 
[解决办法]
还没解决阿，楼上的已经解释的够详细了阿BTW；新手围观学习
[解决办法]
太简单了。使用：ajax，发送数据，然后回调下就行了。