⑴ ajax 省市區多級聯動（在struts2中），有人能做出個簡單的嗎
多級聯動實現：
<form action="http://www.sharejs.com" method=post name="creator" enctype="multipart/form-data">
<script language="javascript">
<!--
var where = new Array(35);
function comefrom(loca,locacity) { this.loca = loca; this.locacity = locacity; }
where[0]= new comefrom("請選擇省份名","請選擇城市名");
where[1] = new comefrom("北京","|東城|西城|崇文|宣武|朝陽|豐台|石景山|海淀|門頭溝|房山|通州|順義|昌平|大興|平谷|懷柔|密雲|延慶");
where[2] = new comefrom("上海","|黃浦|盧灣|徐匯|長寧|靜安|普陀|閘北|虹口|楊浦|閔行|寶山|嘉定|浦東|金山|松江|青浦|南匯|奉賢|崇明");
where[3] = new comefrom("天津","|和平|東麗|河東|西青|河西|津南|南開|北辰|河北|武清|紅撟|塘沽|漢沽|大港|寧河|靜海|寶坻|薊縣");
where[4] = new comefrom("重慶","|萬州|涪陵|渝中|大渡口|江北|沙坪壩|九龍坡|南岸|北碚|萬盛|雙撟|渝北|巴南|黔江|長壽|綦江|潼南|銅梁|大足|榮昌|壁山|梁平|城口|豐都|墊江|武隆|忠縣|開縣|雲陽|奉節|巫山|巫溪|石柱|秀山|酉陽|彭水|江津|合川|永川|南川");
where[5] = new comefrom("河北","|石家莊|邯鄲|邢台|保定|張家口|承德|廊坊|唐山|秦皇島|滄州|衡水");
where[6] = new comefrom("山西","|太原|大同|陽泉|長治|晉城|朔州|呂梁|忻州|晉中|臨汾|運城");
where[7] = new comefrom("內蒙古","|呼和浩特|包頭|烏海|赤峰|呼倫貝爾盟|阿拉善盟|哲里木盟|興安盟|烏蘭察布盟|錫林郭勒盟|巴彥淖爾盟|伊克昭盟");
where[8] = new comefrom("遼寧","|沈陽|大連|鞍山|撫順|本溪|丹東|錦州|營口|阜新|遼陽|盤錦|鐵嶺|朝陽|葫蘆島");
where[9] = new comefrom("吉林","|長春|吉林|四平|遼源|通化|白山|松原|白城|延邊");
where[10] = new comefrom("黑龍江","|哈爾濱|齊齊哈爾|牡丹江|佳木斯|大慶|綏化|鶴崗|雞西|黑河|雙鴨山|伊春|七台河|大興安嶺");
where[11] = new comefrom("江蘇","|南京|鎮江|蘇州|南通|揚州|鹽城|徐州|連雲港|常州|無錫|宿遷|泰州|淮安");
where[12] = new comefrom("浙江","|杭州|寧波|溫州|嘉興|湖州|紹興|金華|衢州|舟山|台州|麗水");
where[13] = new comefrom("安徽","|合肥|蕪湖|蚌埠|馬鞍山|淮北|銅陵|安慶|黃山|滁州|宿州|池州|淮南|巢湖|阜陽|六安|宣城|亳州");
where[14] = new comefrom("福建","|福州|廈門|莆田|三明|泉州|漳州|南平|龍岩|寧德");
where[15] = new comefrom("江西","|南昌市|景德鎮|九江|鷹潭|萍鄉|新餘|贛州|吉安|宜春|撫州|上饒");
where[16] = new comefrom("山東","|濟南|青島|淄博|棗庄|東營|煙台|濰坊|濟寧|泰安|威海|日照|萊蕪|臨沂|德州|聊城|濱州|菏澤");
where[17] = new comefrom("河南","|鄭州|開封|洛陽|平頂山|安陽|鶴壁|新鄉|焦作|濮陽|許昌|漯河|三門峽|南陽|商丘|信陽|周口|駐馬店|濟源");
where[18] = new comefrom("湖北","|武漢|宜昌|荊州|襄樊|黃石|荊門|黃岡|十堰|恩施|潛江|天門|仙桃|隨州|咸寧|孝感|鄂州");
where[19] = new comefrom("湖南","|長沙|常德|株洲|湘潭|衡陽|岳陽|邵陽|益陽|婁底|懷化|郴州|永州|湘西|張家界");
where[20] = new comefrom("廣東","|廣州|深圳|珠海|汕頭|東莞|中山|佛山|韶關|江門|湛江|茂名|肇慶|惠州|梅州|汕尾|河源|陽江|清遠|潮州|揭陽|雲浮");
where[21] = new comefrom("廣西","|南寧|柳州|桂林|梧州|北海|防城港|欽州|貴港|玉林|南寧地區|柳州地區|賀州|百色|河池");
where[22] = new comefrom("海南","|海口|三亞");
where[23] = new comefrom("四川","|成都|綿陽|德陽|自貢|攀枝花|廣元|內江|樂山|南充|宜賓|廣安|達川|雅安|眉山|甘孜|涼山|瀘州");
where[24] = new comefrom("貴州","|貴陽|六盤水|遵義|安順|銅仁|黔西南|畢節|黔東南|黔南");
where[25] = new comefrom("雲南","|昆明|大理|曲靖|玉溪|昭通|楚雄|紅河|文山|思茅|西雙版納|保山|德宏|麗江|怒江|迪慶|臨滄");
where[26] = new comefrom("西藏","|拉薩|日喀則|山南|林芝|昌都|阿里|那曲");
where[27] = new comefrom("陝西","|西安|寶雞|咸陽|銅川|渭南|延安|榆林|漢中|安康|商洛");
where[28] = new comefrom("甘肅","|蘭州|嘉峪關|金昌|白銀|天水|酒泉|張掖|武威|定西|隴南|平涼|慶陽|臨夏|甘南");
where[29] = new comefrom("寧夏","|銀川|石嘴山|吳忠|固原");
where[30] = new comefrom("青海","|西寧|海東|海南|海北|黃南|玉樹|果洛|海西");
where[31] = new comefrom("新疆","|烏魯木齊|石河子|克拉瑪依|伊犁|巴音郭勒|昌吉|克孜勒蘇柯爾克孜|博爾塔拉|吐魯番|哈密|喀什|和田|阿克蘇");
where[32] = new comefrom("香港","");
where[33] = new comefrom("澳門","");
where[34] = new comefrom("台灣","|台北|高雄|台中|台南|屏東|南投|雲林|新竹|彰化|苗栗|嘉義|花蓮|桃園|宜蘭|基隆|台東|金門|馬祖|澎湖");
where[35] = new comefrom("其它","|北美洲|南美洲|亞洲|非洲|歐洲|大洋洲");
function select() {
with(document.creator.province) { var loca2 = options[selectedIndex].value; }
for(i = 0;i < where.length;i ++) {
if (where[i].loca == loca2) {
loca3 = (where[i].locacity).split("|");
for(j = 0;j < loca3.length;j++) { with(document.creator.city) { length = loca3.length; options[j].text = loca3[j]; options[j].value = loca3[j]; var loca4=options[selectedIndex].value;}}
break;
}}
document.creator.newlocation.value=loca2+loca4;
}
function init() {
with(document.creator.province) {
length = where.length;
for(k=0;k<where.length;k++) { options[k].text = where[k].loca; options[k].value = where[k].loca; }
options[selectedIndex].text = where[0].loca; options[selectedIndex].value = where[0].loca;
}
with(document.creator.city) {
loca3 = (where[0].locacity).split("|");
length = loca3.length;
for(l=0;l<length;l++) { options[l].text = loca3[l]; options[l].value = loca3[l]; }
options[selectedIndex].text = loca3[0]; options[selectedIndex].value = loca3[0];
}}
-->
</script>
<body onload="init()">
<font color=#000000><b>來自：</b>
請輸入您所在國家的具體地方。此項可選
省份 <select name="province" onChange = "select()"></select>城市 <select name="city" onChange = "select()"> </select>
我在 <input type=text name="newlocation" maxlength=12 size=12 style="font-weight: bold">不能超過12個字元（6個漢字）
</form>