我想要实现这样一个功能...有一个两级联动,
<select id = "" name = ""> <option>第一级</option></select>
<select id = "" name = ""> <option>第二级</option></select>下面有一个添加按钮，当点击添加按钮时,在下面再添加上面相同的两级联动，再点击时又添加一个,依此类推...我想要请教大家的是：当我添加了一个新的两级联动的时候 这个两级联动的代码怎么实现,后面添加的两级联动也要实现..我想知道实现的思路是怎么样，如果有源码就更好。。比较急.. PS: 第一个两级联动我已经实现 谢谢大家了
<select id = "" name = ""> <option>第一级</option></select>
<select id = "" name = ""> <option>第二级</option></select>下面有一个添加按钮，当点击添加按钮时,在下面再添加上面相同的两级联动，再点击时又添加一个,依此类推...我想要请教大家的是：当我添加了一个新的两级联动的时候 这个两级联动的代码怎么实现,后面添加的两级联动也要实现..我想知道实现的思路是怎么样，如果有源码就更好。。比较急.. PS: 第一个两级联动我已经实现 谢谢大家了
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
<title> </title>
</head>
<body>
<a href="javascript:;" onclick="add()">添加</a>
<p >省：<select id='slcProvince'></select>市：<select id='slcCity'></select> </p> <p >省：<select id='Select1'></select>市：<select id='Select2'></select> </p>
<p >省：<select id='Select3'></select>市：<select id='Select4'></select> </p>
</body>
<script type="text/javascript">
var __provinceAndCity = null;
window.onload=function (){
__provinceAndCity = new __ProvinceAndCityClass($("slcProvince"),$("slcCity")); new __ProvinceAndCityClass($("Select1"),$("Select2"));
new __ProvinceAndCityClass($("Select3"),$("Select4"));
include("http://fw.qq.com/ipaddress?t="+Math.random(),'gb2312',function(){
// IPData[0] ip IPData[2] 省 IPData[3] 市
__provinceAndCity.selectProvince.value = IPData[2];
__provinceAndCity.SlcProvinceChanged();
__provinceAndCity.selectCity.value = IPData[3];
});
};
function add(){
var div= document.createElement("div");
div.innerHTML = "省：<select ></select>市：<select></select>";
document.body.appendChild(div);
setTimeout(function(){
var slcs = $$("select",div);
new __ProvinceAndCityClass(slcs[0],slcs[1]);
},500);
}var $ = function (id,obj) {
obj = obj|| document;
return "string" == typeof id ? obj.getElementById(id) : id;
};
var $$ = function (name,obj) {
obj = obj|| document;
return "string" == typeof name ? obj.getElementsByTagName(name) : name;
};
// 动态导入js
function include(src,encoding,fun)
{
var s = document.createElement('script');
s.type='text/javascript';
s.charset=encoding; //'gb2312';
s.src = src;
var tags =$$('head');
if(typeof(fun)=='function'){
if( document.all ){
s.onreadystatechange = function(){
if(/(complete|loaded)/.test(this.readyState)){
fun(); s.onreadystatechange = null; s.parentNode.removeChild(s);
}};
}else{
s.onload = function(){ fun(); s.onload = null; s.parentNode.removeChild(s); };
}
}
tags[0].appendChild(s);
};function __ProvinceAndCityClass(slcProvince,slcCity)
{
this.selectProvince = slcProvince;
this.selectCity = slcCity;
this.InitData();
}
__ProvinceAndCityClass.prototype.SlcProvinceChanged = function()
{
var obj=this;
var provinceIndex = obj.selectProvince.selectedIndex;
obj.selectCity.options.length = 0;
for(var index=0;index< obj.CityList[provinceIndex].length;index++)
{
obj.selectCity.options.add(new Option(obj.CityList[provinceIndex][index],obj.CityList[provinceIndex][index]));
}
obj.selectCity.value = obj.CityList[provinceIndex][0];
};__ProvinceAndCityClass.prototype.InitData=function()
{
var obj = this;
//初始化数据
for(var index=0;index< obj.ProvinceList.length;index++)
{
obj.selectProvince.options.add(new Option(obj.ProvinceList[index],obj.ProvinceList[index]));
}
obj.selectProvince.value = obj.ProvinceList[0];
obj.selectProvince.onchange =function(){ obj.SlcProvinceChanged.call(obj)};
obj.SlcProvinceChanged.call(obj);
};__ProvinceAndCityClass.prototype.ProvinceList=["北京市","天津市","上海市","重庆市","河北省","山西省","台湾省","辽宁省","吉林省","黑龙江省","江苏省", "浙江省","安徽省","福建省","江西省","山东省",
"河南省","湖北省","湖南省","广东省","甘肃省","四川省","贵州省","海南省","云南省","青海省","陕西省","广西","西藏","宁夏","新疆","内蒙","澳门","香港","国外与其它"];
__ProvinceAndCityClass.prototype.CityList=
[
["北京市"],["天津市"],["上海市"],["重庆市"],
["石家庄市","唐山市","秦皇岛市","邯郸市","邢台市","保定市","张家口市","承德市","沧州市","廊坊市","衡水市"],
["太原市","大同市","阳泉市","长治市","晋城市","朔州市","晋中市","运城市","忻州市","临汾市","吕梁市"],
["台北市","高雄市","基隆市","台中市","台南市","新竹市","嘉义市","台北县","宜兰县","桃园县","新竹县","苗栗县","台中县","彰化县","南投县","云林县","嘉义县","台南县","高雄县","屏东县","澎湖县","台东县","花莲县"],
["沈阳市","大连市","鞍山市","抚顺市","本溪市","丹东市","锦州市","营口市","阜新市","辽阳市","盘锦市","铁岭市","朝阳市","葫芦岛市"],
["长春市","吉林市","四平市","辽源市","通化市","白山市","松原市","白城市","延边朝鲜族自治州"],
["哈尔滨市","齐齐哈尔市","鹤岗市","双鸭山市","鸡西市","大庆市","伊春市","牡丹江市","佳木斯市","七台河市","黑河市","绥化市","大兴安岭地区"],
["南京市","无锡市","徐州市","常州市","苏州市","南通市","连云港市","淮安市","盐城市","扬州市","镇江市","泰州市","宿迁市"],
["杭州市","宁波市","温州市","嘉兴市","湖州市","绍兴市","金华市","衢州市","舟山市","台州市","丽水市"],
["合肥市","芜湖市","蚌埠市","淮南市","马鞍山市","淮北市","铜陵市","安庆市","黄山市","滁州市","阜阳市","宿州市","巢湖市","六安市","亳州市","池州市","宣城市"],
["福州市","厦门市","莆田市","三明市","泉州市","漳州市","南平市","龙岩市","宁德市"],
["南昌市","景德镇市","萍乡市","九江市","新余市","鹰潭市","赣州市","吉安市","宜春市","抚州市","上饶市"],
["济南市","青岛市","淄博市","枣庄市","东营市","烟台市","潍坊市","济宁市","泰安市","威海市","日照市","莱芜市","临沂市","德州市","聊城市","滨州市","菏泽市"],
["郑州市","开封市","洛阳市","平顶山市","安阳市","鹤壁市","新乡市","焦作市","濮阳市","许昌市","漯河市","三门峡市","南阳市","商丘市","信阳市","周口市","驻马店市","济源市"],
["武汉市","黄石市","十堰市","荆州市","宜昌市","襄樊市","鄂州市","荆门市","孝感市","黄冈市","咸宁市","随州市","仙桃市","天门市","潜江市","神农架林区","恩施土家族苗族自治州"],
["长沙市","株洲市","湘潭市","衡阳市","邵阳市","岳阳市","常德市","张家界市","益阳市","郴州市","永州市","怀化市","娄底市","湘西土家族苗族自治州"],
["广州市","深圳市","珠海市","汕头市","韶关市","佛山市","江门市","湛江市","茂名市","肇庆市","惠州市","梅州市","汕尾市","河源市","阳江市","清远市","东莞市","中山市","潮州市","揭阳市","云浮市"],
["兰州市","金昌市","白银市","天水市","嘉峪关市","武威市","张掖市","平凉市","酒泉市","庆阳市","定西市","陇南市","临夏回族自治州","甘南藏族自治州"],
["成都市","自贡市","攀枝花市","泸州市","德阳市","绵阳市","广元市","遂宁市","内江市","乐山市","南充市","眉山市","宜宾市","广安市","达州市","雅安市","巴中市","资阳市","阿坝藏族羌族自治州","甘孜藏族自治州","凉山彝族自治州"],
["贵阳市","六盘水市","遵义市","安顺市","铜仁地区","毕节地区","黔西南布依族苗族自治州","黔东南苗族侗族自治州","黔南布依族苗族自治州"],
["海口市","三亚市","五指山市","琼海市","儋州市","文昌市","万宁市","东方市","澄迈县","定安县","屯昌县","临高县","白沙黎族自治县","昌江黎族自治县","乐东黎族自治县","陵水黎族自治县","保亭黎族苗族自治县","琼中黎族苗族自治县"],
["昆明市","曲靖市","玉溪市","保山市","昭通市","丽江市","思茅市","临沧市","文山壮族苗族自治州","红河哈尼族彝族自治州","西双版纳傣族自治州","楚雄彝族自治州","大理白族自治州","德宏傣族景颇族自治州","怒江傈傈族自治州","迪庆藏族自治州"],
["西宁市","海东地区","海北藏族自治州","黄南藏族自治州","海南藏族自治州","果洛藏族自治州","玉树藏族自治州","海西蒙古族藏族自治州"],
["西安市","铜川市","宝鸡市","咸阳市","渭南市","延安市","汉中市","榆林市","安康市","商洛市"],
["南宁市","柳州市","桂林市","梧州市","北海市","防城港市","钦州市","贵港市","玉林市","百色市","贺州市","河池市","来宾市","崇左市"],
["拉萨市","那曲地区","昌都地区","山南地区","日喀则地区","阿里地区","林芝地区"],
["银川市","石嘴山市","吴忠市","固原市","中卫市"],
["乌鲁木齐市","克拉玛依市","石河子市 ","阿拉尔市","图木舒克市","五家渠市","吐鲁番市","阿克苏市","喀什市","哈密市","和田市","阿图什市","库尔勒市","昌吉市 ","阜康市","米泉市","博乐市","伊宁市","奎屯市","塔城市","乌苏市","阿勒泰市"],
["呼和浩特市","包头市","乌海市","赤峰市","通辽市","鄂尔多斯市","呼伦贝尔市","巴彦淖尔市","乌兰察布市","锡林郭勒盟","兴安盟","阿拉善盟"],
["澳门"],
["香港"],
["国外或其它"]
];
</script>
</html>