<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 
<html> 
 <head> 
 <base href="<%=basePath%>"> 
 <title>My JSP 'city.jsp' starting page</title> 
 <meta http-equiv="pragma" content="no-cache"> 
 <meta http-equiv="cache-control" content="no-cache"> 
 <meta http-equiv="expires" content="0"> 
 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> 
 <meta http-equiv="description" content="This is my page"> 
 <!-- 
 <link rel="stylesheet" type="text/css" href="styles.css"> 
 --> 
 <script type="text/javascript" src="js/jquery-1.7.2.min.js"></script> 
 <script type="text/javascript"> 
 $(document).ready(function(){ 
  //省 
  $.ajax({url:"xml/City.xml", 
   success:function(xml){ 
    $(xml).find("province").each(function(){ 
    var t = $(this).attr("name");//this-> 
    $("#DropProvince").append("<option>"+t+"</option>"); 
    }); 
   } 
  }); 
  //市 
  $("#DropProvince").change(function(){ 
   $("#sCity>option").remove(); 
   $("#sArea>option").remove(); 
   var pname = $("#DropProvince").val(); 
   $.ajax({url:"xml/City.xml", 
   success:function(xml){ 
    ///查找<province>下的所有第一級子元素(即城市) 
    $(xml).find("province[name='"+pname+"']>city").each(function(){ 
    var city = $(this).attr("name");//this-> 
    $("#sCity").append("<option>"+city+"</option>"); 
    }); 
    ///查找<city>下的所有第一級子元素(即區(qū)域) 
    var cname = $("#sCity").val(); 
    $(xml).find("city[name='"+cname+"']>area").each(function(){ 
    var area = $(this).attr("name");//this-> 
    $("#sArea").append("<option>"+area+"</option>"); 
    }); 
   } 
   }); 
  }); 
  //區(qū) 
  $("#sCity").change(function(){ 
   $("#sArea>option").remove(); 
   var cname = $("#sCity").val(); 
   $.ajax({url:"xml/City.xml", 
   success:function(xml){ 
    ///查找<city>下的所有第一級子元素(即區(qū)域) 
    $(xml).find("city[name='"+cname+"']>area").each(function(){ 
    var area = $(this).attr("name");//this-> 
    $("#sArea").append("<option>"+area+"</option>"); 
    }); 
   } 
   }); 
  }); 
 }); 
 </script> 
 </head> 
 <body> 
 <form id="form1"> 
 <div> 
 <select id="DropProvince" style="width:100px;"> 
  <option>請選擇</option> 
 </select> 
 <select id="sCity" style="width:100px;"> 
  <option>請選擇相應(yīng)市</option> 
 </select> 
  <select id="sArea" style="width:100px;"> 
  <option>請選擇相應(yīng)區(qū)</option> 
 </select> 
 </div> 
 </form> 
 </body> 
</html>

效果圖如下：