<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplicationOne._Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>二级联动</title>
<script type="text/javascript">
var sheng=new Array("湖北","河南","湖南");
function Fillsheng()
{ var shengpoint=document.getElementById("selPoint1");
for(var i=0;i<sheng.length;i++) {
var point=new Option(); point.text=sheng[i]; point.valueOf=sheng[i]; shengpoint.options.add(point);
}
}
var shi = new Array("武汉,宜昌", "洛阳,郑州", "长沙,岳阳");
function Fillshi() {
var shengpoint=document.getElementById("selPoint1"); var shipoint=document.getElementById("selPoint2"); shipoint.options.length = 0; shipoint.options.add(new Option("请选择","请选择")); var citys = shi[shengpoint.selectedIndex-1].split(",");
for(var j=0;j<citys.length;j++) {
var point=new Option(); point.text=citys[j]; point.valueOf=citys[j]; shipoint.options.add(point);
}
}
</script>
</head>
<body onload=" Fillsheng()";>
<form id="form1" runat="server">
<div>
省：
<select id="selPoint1" onchange="Fillshi();">
<option value="请选择">请选择</option>
</select>
市：
<select id="selPoint2">
<option value="请选择">请选择</option>
</select>
</div>
</form>
</body>
</html>
仅供参考！！！