在ASP中关于选择框的问题请教~

Question

我的ASP网页中有两个选择框A，B
A中是从数据库中读取的“大类”数据
B中是小类数据
当A中选择发生变化时，相应的B中的小类也要发生变化~
这个怎么做啊~

Answer 1

那用JSP怎么做啊？我刚接触ASP的~

Answer 2

用数组保存小类数据到客户端的变量，如果大类改变就调用Script去得到相应的小类数据填进选择框。

Answer 3

你把这个帖子放到Web开发的javacript版，很快就有答案了

Answer 4

http://expert.csdn.net/Expert/topic/2393/2393230.xml?temp=.5660822

Answer 5

采用交错数组：JAVASCRIPT：<script language="JavaScript">kindArray = new Array;
kindArray[0] = new Array("1-1","1-2","1-3");
kindArray[1] = new Array("2-1","2-2","2-3","2-4","2-5");
kindArray[2] = new Array("3-1");function series_onchange() 
{ 
  index = document.search.series.selectedIndex; 
  var i;
  document.search.model.length = 0;
  for( i=0; i<=kindArray[index].length-1; i++ )
{
document.search.model.options[i] = new Option(kindArray[index][2*i-1]);
document.search.model.options[i].Value=kindArray[index][2*i];
}
} </script>HTML：<select name="series" style='WIDTH:110px'onChange="series_onchange()" class=option01>
<option selected>1</option>
<option>2</option>
<option>3</option>
</select>

Answer 6

采用交错数组：JAVASCRIPT：<script language="JavaScript">kindArray = new Array;
kindArray[0] = new Array("1-1","1-2","1-3");
kindArray[1] = new Array("2-1","2-2","2-3","2-4","2-5");
kindArray[2] = new Array("3-1");function series_onchange() 
{ 
  index = document.search.series.selectedIndex; 
  var i;
  document.search.model.length = 0;
  for( i=0; i<=kindArray[index].length-1; i++ )
{
document.search.model.options[i] = new Option(kindArray[index][2*i-1]);
document.search.model.options[i].Value=kindArray[index][2*i];
}
} </script>HTML：<select name="series" style='WIDTH:110px'onChange="series_onchange()" class=option01>
<option selected>1</option>
<option>2</option>
<option>3</option>
</select>

Answer 7

这个可以不关asp的事，用xml数据岛解决<title>xml数据岛</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<xml id="xmlData">
<root>
<departments>
<department><departmentName>计算机科学系</departmentName></department>
<department><departmentName>会计系</departmentName></department>
<department><departmentName>经济管理系</departmentName></department>
<department><departmentName>公共管理系</departmentName></department>
<department><departmentName>商务美术系</departmentName></department>
</departments>
<classes>
<class><className>2001电1</className><departmentName>会计系</departmentName><major></major></class>
<class><className>2001电2</className><departmentName>会计系</departmentName><major></major></class>
<class><className>2001高职计1</className><departmentName>计算机科学系</departmentName><major></major></class>
<class><className>2001高职计2</className><departmentName>计算机科学系</departmentName><major></major></class>
<class><className>2001高职旅游</className><departmentName>经济管理系</departmentName><major></major></class>
<class><className>2001高职文秘</className><departmentName>公共管理系</departmentName><major></major></class>
<class><className>2001计1</className><departmentName>计算机科学系</departmentName><major></major></class>
<class><className>2001计2</className><departmentName>计算机科学系</departmentName><major></major></class>
<class><className>2001经法</className><departmentName>经济管理系</departmentName><major></major></class>
<class><className>2001旅游</className><departmentName>经济管理系</departmentName><major></major></class>
<class><className>2001商1</className><departmentName>计算机科学系</departmentName><major></major></class>
<class><className>2001商2</className><departmentName>计算机科学系</departmentName><major></major></class>
<class><className>2001文秘</className><departmentName>公共管理系</departmentName><major></major></class>
<class><className>2001装潢</className><departmentName>商务美术系</departmentName><major></major></class>
<class><className>2002电1</className><departmentName>会计系</departmentName><major></major></class>
<class><className>2002电2</className><departmentName>会计系</departmentName><major></major></class>
<class><className>2002电3</className><departmentName>会计系</departmentName><major></major></class>
<class><className>2002高职计1</className><departmentName>计算机科学系</departmentName><major></major></class>
<class><className>2002高职旅游</className><departmentName>经济管理系</departmentName><major></major></class>
<class><className>2002高职证券</className><departmentName>会计系</departmentName><major></major></class>
<class><className>2002计1</className><departmentName>计算机科学系</departmentName><major></major></class>
<class><className>2002计2</className><departmentName>计算机科学系</departmentName><major></major></class>
<class><className>2002计3</className><departmentName>计算机科学系</departmentName><major></major></class>
<class><className>2002计4</className><departmentName>计算机科学系</departmentName><major></major></class>
<class><className>2002计5</className><departmentName>计算机科学系</departmentName><major></major></class>
<class><className>2002商务英语</className><departmentName>公共管理系</departmentName><major></major></class>
<class><className>2002市场营销</className><departmentName>经济管理系</departmentName><major></major></class>
<class><className>2002文秘</className><departmentName>公共管理系</departmentName><major></major></class>
<class><className>2002物业管理</className><departmentName>经济管理系</departmentName><major></major></class>
<class><className>2002装潢</className><departmentName>商务美术系</departmentName><major></major></class>
<class><className>2003电1</className><departmentName>会计系</departmentName><major></major></class>
<class><className>2003电2</className><departmentName>会计系</departmentName><major></major></class>
<class><className>2003电3</className><departmentName>会计系</departmentName><major></major></class>
<class><className>2003电4</className><departmentName>会计系</departmentName><major></major></class>
<class><className>2003计1</className><departmentName>计算机科学系</departmentName><major></major></class>
<class><className>2003计2</className><departmentName>计算机科学系</departmentName><major></major></class>
<class><className>2003计3</className><departmentName>计算机科学系</departmentName><major></major></class>
<class><className>2003计4</className><departmentName>计算机科学系</departmentName><major></major></class>
<class><className>2003旅游</className><departmentName>经济管理系</departmentName><major></major></class>
<class><className>2003企管与经贸</className><departmentName>经济管理系</departmentName><major></major></class>
<class><className>2003文商</className><departmentName>公共管理系</departmentName><major></major></class>
<class><className>2003装潢</className><departmentName>商务美术系</departmentName><major></major></class>
</classes>
</root>
</xml>系部
<select name="sDep" style="width:110" onchange="addClasses(this.value,sGrade.value)">
</select>
年级
<select name="sGrade" style="width:60" onchange="addClasses(sDep.value,this.value)">
  <option value="2001">2001</option>
  <option value="2002">2002</option>
  <option value="2003">2003</option>
  <option value="2004">2004</option>
  <option value="2005">2005</option>
  <option value="2006">2006</option>
  <option value="2007">2007</option>
  <option value="2008">2008</option>
</select>
班级 
<select name="sClass" style="width:110">
</select><script language="JavaScript">
var i;
var nodelist,opt;
var tmpDep;//add departments
nodelist=xmlData.XMLDocument.selectNodes("/root/departments/department");
for(i=0;i<nodelist.length;i++)
{
 opt=document.createElement("option"); 
 opt.value=nodelist.item(i).selectSingleNode("departmentName").text;
 opt.text=nodelist.item(i).selectSingleNode("departmentName").text;
 sDep.add(opt);
}//filter classes by department
tmpDep=nodelist.item(0).selectSingleNode("departmentName").text;
addClasses(tmpDep,sGrade.value);function addClasses(dep,grade)
{
 for(i=sClass.options.length-1;i>=0;i--) sClass.remove(i);
 
 nodelist=xmlData.XMLDocument.selectNodes("/root/classes/class[departmentName='" + dep + "']");
 for(i=0;i<nodelist.length;i++)
 {
  tmp=nodelist.item(i).selectSingleNode("className").text;
  if(tmp.substring(0,4)==grade) //filter classes by grade
   {opt=document.createElement("option"); 
opt.value=tmp;
opt.text=tmp;
sClass.add(opt);}
 }
}</script>