网上很多的js实现的省市联动,都只是实现了注册时的选择功能,但对于存储进数据库后的省市信息,可能会应用于修改页面,在修改时,需要首先从数据库中读出对应的省份和城市,然后在下拉列表中将其选中,本文主要实现了这方面的需求；
// JScript 文件
var where = new Array( 32 );
function comefrom(loca,locacity) { this.loca = loca; this.locacity = locacity; }
where[ 0 ] = new comefrom( " 选择省份 " , " 选择城市 " );
where[ 1 ] = new comefrom( " 北京 " , " 东城|西城|崇文|宣武|朝阳|丰台|石景山|海淀|门头沟|房山|通州|顺义|昌平|大兴|平谷|怀柔|密云|延庆 " );
where[ 2 ] = new comefrom( " 上海 " , " 黄浦|卢湾|徐汇|长宁|静安|普陀|闸北|虹口|杨浦|闵行|宝山|嘉定|浦东|金山|松江|青浦|南汇|奉贤|崇明 " );
where[ 3 ] = new comefrom( " 天津 " , " 和平|东丽|河东|西青|河西|津南|南开|北辰|河北|武清|红挢|塘沽|汉沽|大港|宁河|静海|宝坻|蓟县 " );
where[ 4 ] = new comefrom( " 重庆 " , " 万州|涪陵|渝中|大渡口|江北|沙坪坝|九龙坡|南岸|北碚|万盛|双挢|渝北|巴南|黔江|长寿|綦江|潼南|铜梁|大足|荣昌|壁山|梁平|城口|丰都|垫江|武隆|忠县|开县|云阳|奉节|巫山|巫溪|石柱|秀山|酉阳|彭水|江津|合川|永川|南川 " );
where[ 5 ] = new comefrom( " 河北 " , " 石家庄|邯郸|邢台|保定|张家口|承德|廊坊|唐山|秦皇岛|沧州|衡水 " );
where[ 6 ] = new comefrom( " 山西 " , " 太原|大同|阳泉|长治|晋城|朔州|吕梁|忻州|晋中|临汾|运城 " );
where[ 7 ] = new comefrom( " 内蒙古 " , " 呼和浩特|包头|乌海|赤峰|呼伦贝尔盟|阿拉善盟|哲里木盟|兴安盟|乌兰察布盟|锡林郭勒盟|巴彦淖尔盟|伊克昭盟 " );
where[ 8 ] = new comefrom( " 辽宁 " , " 沈阳|大连|鞍山|抚顺|本溪|丹东|锦州|营口|阜新|辽阳|盘锦|铁岭|朝阳|葫芦岛 " );
where[ 9 ] = new comefrom( " 吉林 " , " 长春|吉林|四平|辽源|通化|白山|松原|白城|延边 " );
where[ 10 ] = new comefrom( " 黑龙江 " , " 哈尔滨|齐齐哈尔|牡丹江|佳木斯|大庆|绥化|鹤岗|鸡西|黑河|双鸭山|伊春|七台河|大兴安岭 " );
where[ 11 ] = new comefrom( " 江苏 " , " 南京|镇江|苏州|南通|扬州|盐城|徐州|连云港|常州|无锡|宿迁|泰州|淮安 " );
where[ 12 ] = new comefrom( " 浙江 " , " 杭州|宁波|温州|嘉兴|湖州|绍兴|金华|衢州|舟山|台州|丽水 " );
where[ 13 ] = new comefrom( " 安徽 " , " 合肥|芜湖|蚌埠|马鞍山|淮北|铜陵|安庆|黄山|滁州|宿州|池州|淮南|巢湖|阜阳|六安|宣城|亳州 " );
where[ 14 ] = new comefrom( " 福建 " , " 福州|厦门|莆田|三明|泉州|漳州|南平|龙岩|宁德 " );
where[ 15 ] = new comefrom( " 江西 " , " 南昌市|景德镇|九江|鹰潭|萍乡|新馀|赣州|吉安|宜春|抚州|上饶 " );
where[ 16 ] = new comefrom( " 山东 " , " 济南|青岛|淄博|枣庄|东营|烟台|潍坊|济宁|泰安|威海|日照|莱芜|临沂|德州|聊城|滨州|菏泽 " );
where[ 17 ] = new comefrom( " 河南 " , " 郑州|开封|洛阳|平顶山|安阳|鹤壁|新乡|焦作|濮阳|许昌|漯河|三门峡|南阳|商丘|信阳|周口|驻马店|济源 " );
where[ 18 ] = new comefrom( " 湖北 " , " 武汉|宜昌|荆州|襄樊|黄石|荆门|黄冈|十堰|恩施|潜江|天门|仙桃|随州|咸宁|孝感|鄂州 " );
where[ 19 ] = new comefrom( " 湖南 " , " 长沙|常德|株洲|湘潭|衡阳|岳阳|邵阳|益阳|娄底|怀化|郴州|永州|湘西|张家界 " );
where[ 20 ] = new comefrom( " 广东 " , " 广州|深圳|珠海|汕头|东莞|中山|佛山|韶关|江门|湛江|茂名|肇庆|惠州|梅州|汕尾|河源|阳江|清远|潮州|揭阳|云浮 " );
where[ 21 ] = new comefrom( " 广西 " , " 南宁|柳州|桂林|梧州|北海|防城港|钦州|贵港|玉林|南宁地区|柳州地区|贺州|百色|河池 " );
where[ 22 ] = new comefrom( " 海南 " , " 海口|三亚 " );
where[ 23 ] = new comefrom( " 四川 " , " 成都|绵阳|德阳|自贡|攀枝花|广元|内江|乐山|南充|宜宾|广安|达川|雅安|眉山|甘孜|凉山|泸州 " );
where[ 24 ] = new comefrom( " 贵州 " , " 贵阳|六盘水|遵义|安顺|铜仁|黔西南|毕节|黔东南|黔南 " );
where[ 25 ] = new comefrom( " 云南 " , " 昆明|大理|曲靖|玉溪|昭通|楚雄|红河|文山|思茅|西双版纳|保山|德宏|丽江|怒江|迪庆|临沧 " );
where[ 26 ] = new comefrom( " 西藏 " , " 拉萨|日喀则|山南|林芝|昌都|阿里|那曲 " );
where[ 27 ] = new comefrom( " 陕西 " , " 西安|宝鸡|咸阳|铜川|渭南|延安|榆林|汉中|安康|商洛 " );
where[ 28 ] = new comefrom( " 甘肃 " , " 兰州|嘉峪关|金昌|白银|天水|酒泉|张掖|武威|定西|陇南|平凉|庆阳|临夏|甘南 " );
where[ 29 ] = new comefrom( " 宁夏 " , " 银川|石嘴山|吴忠|固原 " );
where[ 30 ] = new comefrom( " 青海 " , " 西宁|海东|海南|海北|黄南|玉树|果洛|海西 " );
where[ 31 ] = new comefrom( " 新疆 " , " 乌鲁木齐|石河子|克拉玛依|伊犁|巴音郭勒|昌吉|克孜勒苏柯尔克孜|博尔塔拉|吐鲁番|哈密|喀什|和田|阿克苏 " );
function select() // onchange函数，调用选中省份的城市
{
with(document.form1.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.form1.city)
{
length = loca3.length;
options[j].text = loca3[j];
options[j].value = loca3[j];
//var loca4=options[selectedIndex].value;
}
}
break;
}
}
}
function init(sheng,shi) {
var sheng=arguments[0];
var shi=arguments[1];
with(document.form1.province)
{
length = where.length;
if(sheng=="")//没有要加载的城市
{
loca3 = (where[0].locacity).split("|"); //没有要加载的城市，选择默认第一项
for(k=0;k<where.length;k++)
{
options[k].text = where[k].loca;
options[k].value = where[k].loca;
}
options[0].selected = true;
}
else
{
for(k=0;k<where.length;k++)
{
if(where[k].loca==sheng)//判断要选中的省份
{
options[k].selected = true;
loca3 = (where[k].locacity).split("|"); //选中哪个省份，然后加载相应的城市分类
}
options[k].text = where[k].loca;
options[k].value = where[k].loca;
}
}
}
with(document.form1.city)
{
length = loca3.length;
for(l=0;l<length;l++)
{
if(loca3[l]==shi)//判断要选中的城市
{
options[l].selected = true;
}
options[l].text = loca3[l];
options[l].value = loca3[l];
}
//options[selectedIndex].text = loca3[0]; options[selectedIndex].value = loca3[0];
}
}注册信息时:
<% @ Page Language="C#" AutoEventWireup="true" CodeFile="test.aspx.cs" Inherits="test" %>
<! 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 > 无标题页 </ title >
< script language ="javascript" src ="ProvinceCity.js" ></ script >
</ head >
< body >
< form id ="form1" runat ="server" >
< div >
< select id ="province" size ="1" name ="province" runat ="server" onchange ="select();" style ="width:100px" >
< option selected ></ option >
</ select >
< select id ="city" size ="1" name ="city" runat ="server" style ="width:100px" >
< option selected ></ option >
</ select >
< script language ="javascript" >
init('','');
</ script >
</ div >
</ form >
</ body >
</ html >修改信息时:
把上面的init('','');替换成 init('<%=pro %>','<%=city2 %>');
对应的.cs文件中
protected string pro;
protected string city2;
protected void Page_Load( object sender, EventArgs e)
{
pro = "xxxxx";//数据库中读取出的省份数据；
city2 = "yyyyy";//数据库中读取出的城市数据；
}Over!
本文章为转载内容，我们尊重原作者对文章享有的著作权。如有内容错误或侵权问题，欢迎原作者联系我们进行内容更正或删除文章。
