asp二级联动列表框
</head>
<script language="JavaScript" type="text/javascript">
function citychange()
{
id=province.options[province.selectedIndex].value;
switch(id)
{
case '0':
city.options[0].text='--请选择--';
city.options[0].value='0';
break;
case '<%=rs("code")%>':
<%set rsurl=server.createobject("adodb.recordset")
rsurl.open "select * from g_city where provinceId='"&rs("code")&"' ",conn,1,1
if not rsurl.eof then%>
city.options.length=<%=rsurl.recordcount+1%>;
city.options[0].text='--请选择--';
city.options[0].value='0';
<%for j=1 to rsurl.recordcount%>
city.options[<%=j%>].text='<%=rsurl("name")%>';
city.options[<%=j%>].value='<%=rsurl("code")%>';
<% next
%>
<%
else %>
city.options.length=1;
city.options[0].text='--请选择--';
city.options[0].value='0';
<%end if%>
break;
}
}
</script>
<body>
调用过程
<select name="province" id="province" onchange="citychange()" >