js判断radio,checkbox 问题

Question

<form action="elearning_paperHandle.jsp" method="post" name="paperForm">
  <%
String paperid = request.getParameter("paperid");//卷id
java.util.Hashtable ht4 =(java.util.Hashtable) learning.impl.LearnInstance.getTestInstance().loadPaper(paperid);
 %>
 <input name="paperid1" type="hidden" value="<%=paperid%>">
 <input name="opt" type="hidden" value="online">
  <input name="courseid" type="hidden" value="<%=request.getParameter("courseid")%>">
<tr> 
                        <td height="25" colspan="4" style="border-bottom:1px #39D0FA solid;"> 
                          <div align="center"><strong><%=ht4.get("NAME")%></strong><strong></strong></div></td>
                      </tr>
                      <tr> 
                        <td colspan="4"  style="line-height:20px;padding-top:8px;padding-bottom:8px;" > 
  <table width="100%"><tr><td><div align="right"></div></td></tr></table>
                          <table width="100%" border="0" cellspacing="0" cellpadding="0">
                            <tr>
                              <td  style="line-height:20px;border-bottom:1px #ececec dashed; padding-top:8px;padding-bottom:8px;" ><strong>一、单选题 
                                </strong><br>
<%
java.util.Vector quizList = learning.impl.LearnInstance.getTestInstance().getQuizs(paperid,"0");
 for(int k=0;k<quizList.size();k++){
int p=k+1;
java.util.Hashtable ht = (java.util.Hashtable)quizList.get(k);
String quizid = (String)ht.get("QUIZID");
java.util.Hashtable ht1 = learning.impl.LearnInstance.getTestInstance().loadQuiz(quizid);

  %>

<table width="100%" border="0" cellspacing="0" cellpadding="0">
                                  <tr> 
                                    <td width="88%" height="25"><strong><%=p%>.<%=ht1.get("TITLE")%>（）</strong></td>
                                    <td width="12%" height="25"> &nbsp; &nbsp; 
                                    </td>
                                  </tr>
                                  <tr> 
                                    <td colspan="2">
<%
  java.util.Vector  list = learning.impl.LearnInstance.getTestInstance().getQuizoptions(quizid);
   for(int i=0;i<list.size();i++){
  int j =i+1;
  java.util.Hashtable ht2 = (java.util.Hashtable)list.get(i);
%>
&nbsp;&nbsp; <input type="radio" name="radiobutton<%=quizid%>" value="<%=j%>">
                                      选项<%=j%>：<%=ht2.get("OPTIONS")%><br>
<%}%>                                    <!--  请选择正确答案：（） --></td>
                                  </tr>
                                </table>
                            <%}%>
</td></tr>
                          </table>
  
  <table width="100%" border="0" cellspacing="0" cellpadding="0">
                            <tr> 
                              <td  style="line-height:20px;border-bottom:1px #ececec dashed; padding-top:8px;padding-bottom:8px;" ><strong>二、多选题</strong><br> 

  <%
quizList = learning.impl.LearnInstance.getTestInstance().getQuizs(paperid,"1");
 for(int k=0;k<quizList.size();k++){
 int p=k+1;
java.util.Hashtable ht= (java.util.Hashtable)quizList.get(k);
String quizid = (String)ht.get("QUIZID");
java.util.Hashtable ht1 = learning.impl.LearnInstance.getTestInstance().loadQuiz(quizid);
%>
  
  <table width="100%" border="0" cellspacing="0" cellpadding="0">
                                  <tr> 
                                    <td width="90%" height="25"><strong><%=p%>.<%=ht1.get("TITLE")%>（）</strong></td>
                                    <td width="10%" height="25">&nbsp;&nbsp;</td>
                                  </tr>
                                  <tr> 
<td colspan="2"> 
<%
   java.util.Vector list = learning.impl.LearnInstance.getTestInstance().getQuizoptions(quizid);
   for(int i=0;i<list.size();i++){
  int j =i+1;
  java.util.Hashtable ht2 = (java.util.Hashtable)list.get(i);
%>
&nbsp;&nbsp; 
                                      <input type="checkbox" name="checkbox<%=quizid%>" value="<%=j%>">
  选项<%=j%>：<%=ht2.get("OPTIONS")%>
                                  <br>
                            <%}%>
                          </td>
  </tr>
</table>
<%}%>
</td>
</tr>
  </table>
                   </strong></td>
                      </tr>
  <tr><td>
   <table width="100%">
<tr><td align="center">
<%
String status=(String)ht4.get("STATUS");
if("0".equals(status)){

%>
<input name="name" type="button" value="确定" onClick="answerPaper()">
<%}%>
 &nbsp;&nbsp;<input name="name1" type="button" value="取消" onClick="location.href('elearning_studentonlineTest.jsp')"> </td>
</tr>
</table>
  </td></tr>
  </form>代码如上,这是个卷子的显示页面,就是显示题目和题干内容.上面的是单项选择,下面的是多项选择,现在我想用js判断是否选中答案,怎么判断?

Answer 1

重发一下代码，上面的太乱了
<form action="elearning_paperHandle.jsp" method="post" name="paperForm">
<%
String paperid = request.getParameter("paperid");//卷id
java.util.Hashtable ht4 =(java.util.Hashtable) learning.impl.LearnInstance.getTestInstance().loadPaper(paperid);
%>
<input name="paperid1" type="hidden" value="<%=paperid%>">
<input name="opt" type="hidden" value="online">
<input name="courseid" type="hidden" value="<%=request.getParameter("courseid")%>">
<tr> 
<td height="25" colspan="4" style="border-bottom:1px #39D0FA solid;"> 
<div align="center"><strong><%=ht4.get("NAME")%></strong><strong></strong></div></td>
</tr>
<tr> 
<td colspan="4"  style="line-height:20px;padding-top:8px;padding-bottom:8px;" > 
<table width="100%"><tr><td><div align="right"></div></td></tr></table>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td  style="line-height:20px;border-bottom:1px #ececec dashed; padding-top:8px;padding-bottom:8px;" ><strong>一、单选题 
</strong><br>
<%
java.util.Vector quizList = learning.impl.LearnInstance.getTestInstance().getQuizs(paperid,"0");
for(int k=0;k<quizList.size();k++){
int p=k+1;
java.util.Hashtable ht = (java.util.Hashtable)quizList.get(k);
String quizid = (String)ht.get("QUIZID");
java.util.Hashtable ht1 = learning.impl.LearnInstance.getTestInstance().loadQuiz(quizid);%><table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr> 
<td width="88%" height="25"><strong><%=p%>.<%=ht1.get("TITLE")%>（）</strong></td>
<td width="12%" height="25"> &nbsp; &nbsp; 
</td>
</tr>
<tr> 
<td colspan="2">
<%
java.util.Vector  list = learning.impl.LearnInstance.getTestInstance().getQuizoptions(quizid);
for(int i=0;i<list.size();i++){
int j =i+1;
java.util.Hashtable ht2 = (java.util.Hashtable)list.get(i);
%>
&nbsp;&nbsp; <input type="radio" name="radiobutton<%=quizid%>" value="<%=j%>">
选项<%=j%>：<%=ht2.get("OPTIONS")%><br>
<%}%><!--  请选择正确答案：（） --></td>
</tr>
</table>
<%}%>
</td></tr>
</table><table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr> 
<td  style="line-height:20px;border-bottom:1px #ececec dashed; padding-top:8px;padding-bottom:8px;" ><strong>二、多选题</strong><br> <%
quizList = learning.impl.LearnInstance.getTestInstance().getQuizs(paperid,"1");
for(int k=0;k<quizList.size();k++){
int p=k+1;
java.util.Hashtable ht= (java.util.Hashtable)quizList.get(k);
String quizid = (String)ht.get("QUIZID");
java.util.Hashtable ht1 = learning.impl.LearnInstance.getTestInstance().loadQuiz(quizid);
%><table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr> 
<td width="90%" height="25"><strong><%=p%>.<%=ht1.get("TITLE")%>（）</strong></td>
<td width="10%" height="25">&nbsp;&nbsp;</td>
</tr>
<tr> 
<td colspan="2"> 
<%
java.util.Vector list = learning.impl.LearnInstance.getTestInstance().getQuizoptions(quizid);
for(int i=0;i<list.size();i++){
int j =i+1;
java.util.Hashtable ht2 = (java.util.Hashtable)list.get(i);
%>
&nbsp;&nbsp; 
<input type="checkbox" name="checkbox<%=quizid%>" value="<%=j%>">
选项<%=j%>：<%=ht2.get("OPTIONS")%>
<br>
<%}%>
</td>
</tr>
</table>
<%}%>
</td>
</tr>
</table>
</strong></td>
</tr>
<tr><td>
<table width="100%">
<tr><td align="center">
<%
String status=(String)ht4.get("STATUS");
if("0".equals(status)){%>
<input name="name" type="button" value="确定" onClick="answerPaper()">
<%}%>
&nbsp;&nbsp;<input name="name1" type="button" value="取消" onClick="location.href('elearning_studentonlineTest.jsp')"> </td>
</tr>
</table>
</td></tr>
</form>

Answer 2

看看有没有用
http://blog.csdn.net/rainv/archive/2007/01/14/1482624.aspx