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最近沒事，寫了個在項目經常要取城市或省份名的方法，所以改成了一個類．方便以後調用

//********************************************************************************
//*                                                                              *
//    功能描述：從XML中獲取數據
//    版本編號：owendu V1.1
//    初始創建： 2006.08.27
//    最後修改： 2006.10.08
//*                                                                              *
//********************************************************************************

//根據cityid，獲取返回cityname   ---------------XMLurl 指的是整個站點的路征
//頁面調用方式如下：<script language=Javascript>GetCityName("<%=cityid%>","<%=System.Configuration.ConfigurationSettings.APPSettings["LocalSiteURL"]%>")</script>
function GetCityName(cityid,XMLurl)
{
    
     var XmlDoc_city = new ActiveXObject("MSXML2.DOMDocument.3.0");
       XMLDoc_city.async=false;
       XMLDoc_city.validateOnParse=false;
       var Url=xmlurl+"XmlData/city.XML";
       XMLDoc_city.load(Url);
   
  //
    if (XmlDoc_city.readyState == 4 && XmlDoc_city.XML != "")
  {
 
   var city;
   var citIEs = XMLDoc_city.documentElement.selectNodes("city");
  
   for (var i=0; i < citIEs.length; i++)
   {
    city = citIEs[i];
    if (city.getAttribute("cityid") == cityid)
    {
   
     document.write(city.getAttribute("cityname"));
     break;
    }
     //obj2.options[obj2.length] = new Option(city.getAttribute("cityname"),city.getAttribute("cityid"));
   }
     }
    // else
    // {
        //alert('您的浏覽器不支持XML文件讀取,於是本頁面禁止您的操作,推薦使用IE5.0以上可以解決此問題!');
    // }
}

//根據省份id，獲取返回省名   ---------------XMLurl 指的是整個站點的路征
function GetProviceName(pid,XMLurl)
{
    
    var XmlDoc_city = new ActiveXObject("MSXML2.DOMDocument.3.0");
    XMLDoc_city.async=false;
    XMLDoc_city.validateOnParse=false;
    var Url=xmlurl+"XmlData/province.XML";
    XMLDoc_city.load(Url);   
    if(XmlDoc_city.readyState == 4 && XmlDoc_city.XML != "")
 {
  var city;
  var citIEs = XMLDoc_city.documentElement.selectNodes("province");
 
  for (var i=0; i < citIEs.length; i++)
  {
   city = citIEs[i];
   if (city.getAttribute("provinceid") == pid)
   {  
    document.write(city.getAttribute("provincename"));
    break;
   }    
  }
 }
}

//根據地區districtid，獲取返回地區名   ---------------XMLurl 指的是整個站點的路征
function GetProviceName(districtid,XMLurl)
{
    
    var XmlDoc_city = new ActiveXObject("MSXML2.DOMDocument.3.0");
    XMLDoc_city.async=false;
    XMLDoc_city.validateOnParse=false;
    var Url=xmlurl+"XmlData/district.XML";
    XMLDoc_city.load(Url);   
    if(XmlDoc_city.readyState == 4 && XmlDoc_city.XML != "")
 {
  var city;
  var citIEs = XMLDoc_city.documentElement.selectNodes("district");
 
  for (var i=0; i < citIEs.length; i++)
  {
   city = citIEs[i];
   if (city.getAttribute("districtid") == pid)
   {  
    document.write(city.getAttribute("districtname"));
    break;
   }    
  }
 }
}

//根據省份id，城市id,地區（縣）id，獲取返回省城市名地區名   ---------------XMLurl 指的是整個站點的路征
function GetName(pid,cityid,districtid ,XMLurl)
{
   var cityname="";
   var provicename="";
   var districtname="";
    //
   
    var XmlDoc_p = new ActiveXObject("MSXML2.DOMDocument.3.0");
    XMLDoc_p.async=false;
    XMLDoc_p.validateOnParse=false;
    var UrlProvice=xmlurl+"XmlData/province.XML";
    XMLDoc_p.load(UrlProvice);   
    //
    
    var XmlDoc_city = new ActiveXObject("MSXML2.DOMDocument.3.0");
    XMLDoc_city.async=false;
    XMLDoc_city.validateOnParse=false;
    var Urlcity=xmlurl+"XmlData/city.XML";
    XMLDoc_city.load(Urlcity);  
   
    //
    var XmlDoc_district = new ActiveXObject("MSXML2.DOMDocument.3.0");
    XMLDoc_district.async=false;
    XMLDoc_district.validateOnParse=false;
    var Urldis=xmlurl+"XmlData/district.XML";
    XMLDoc_district.load(Urldis);  
    //
    if(XmlDoc_p.readyState == 4 && XmlDoc_p.XML != "")
 {
  var provice;
  var provices = XMLDoc_city.documentElement.selectNodes("province");
 
  for (var i=0; i < provices.length; i++)
  {
   provice = provices[i];
   if (provice.getAttribute("provinceid") == pid)
   {  
      provicename=provice.getAttribute("provincename");
    break;
   }    
  }
 }
 
  if(XmlDoc_city.readyState == 4 && XmlDoc_city.XML != "")
 {
  var city;
  var citys = XMLDoc_city.documentElement.selectNodes("city");
 
  for (var i=0; i < citys.length; i++)
  {
   city = citys[i];
   if (city.getAttribute("cityid") == cityid)
   {  
      cityname=city.getAttribute("cityname");
    break;
   }    
  }
 }
 
  if(XmlDoc_district.readyState == 4 && XmlDoc_district.XML != "")
 {
  var district;
  var districts = XMLDoc_district.documentElement.selectNodes("district");
 
  for (var i=0; i < districts.length; i++)
  {
   district = districts[i];
   if (district.getAttribute("districtid") == districtid)
   {  
      districtname=district.getAttribute("districtname");
    break;
   }    
  }
 }
 var name=provicename+" "+cityname+" "+ districtname;
 document.write(name);
 
}

http://www.cnblogs.com/owendu/archive/2006/10/16/530580.Html