做东西时经常用到中国地区选择功能,于是从网上搜索一些中国地区js代码,然后给他引用到aspx页中,这也许您会碰到个问题:在html中测试一切正常,但是js文件嵌套到aspx文件中，就会出错!这个问题也困饶我n长时间,但是你只要用记事本打开.js后，另存一次，不过要注意的是：底下编码类型请选择：unicode
这样整个世界就和平拉! (注：该方法是小笨笨同学发现)

    长话短说,咱开始讲经:

　　一 .先准备个js文件,给他个美名为:area.js(并把他放到文件夹js下)js下载

area.js代码:

function Dsy()
{
this.Items = {};
}
Dsy.prototype.add = function(id,iArray)
{
this.Items[id] = iArray;
}
Dsy.prototype.Exists = function(id)
{
if(typeof(this.Items[id]) == "undefined") return false;
return true;
}

function change(v){
var str="0";
for(i=0;i<v;i++){ str+=("_"+(document.getElementById(s[i]).selectedIndex-1));};
var ss=document.getElementById(s[v]);
with(ss){
  length = 0;
  options[0]=new Option(opt0[v],opt0[v]);
  if(v && document.getElementById(s[v-1]).selectedIndex>0 || !v)
  {
   if(dsy.Exists(str)){
    ar = dsy.Items[str];
    for(i=0;i<ar.length;i++)options[length]=new Option(ar[i],ar[i]);
    if(v)options[1].selected = true;
   }
  }
  if(++v<s.length){change(v);}
}
}

var dsy = new Dsy();

dsy.add("0",["安徽","北京","福建","甘肃","广东","广西","贵州","海南","河北","河南","黑龙江","湖北","湖南","吉林","江苏","江西","辽宁","内蒙古","宁夏","青海","山东","山西","陕西","上海","四川","天津","西藏","新疆","云南","浙江","重庆"]);

dsy.add("0_0",["安庆","蚌埠","巢湖","池州","滁州","阜阳","合肥","淮北","淮南","黄山","六安","马鞍山","宿州","铜陵","芜湖","宣城","亳州"]);
dsy.add("0_

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在google里搜索更多中国地区三级联动下拉菜单代码和示例(附带代码下载)

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