javacript怎么获取jsp页面中多个name一样的text数据?
<%@ page language= "java " import= "java.util.* " pageEncoding= "ISO-8859-1 "%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+ ":// "+request.getServerName()+ ": "+request.getServerPort()+path+ "/ ";
%>
<%@ page import= "com.accp.dao.* "%>
<%@ page import= "com.accp.bean.* "%>
<%@ page import= "java.sql.* "%>
<%
ResultSet rs=new enterSubject().selectSub();
String number=null;
String subject=null;
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN ">
<html>
<head>
<base href= " <%=basePath%> ">
<title> My JSP 'answer.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 ">
<!--
-->
<script type= "text/javascript ">
function checkAnswer()
{
var answer=document.getElementById( "answer ");
}
</script>
</head>
<form name= "form " action= "/ExamOnline/CheckAnswer " onSubmit= "return checkAnswer() ">
<table align= "center ">
<tr> </tr>
<%
while(rs.next())
{
number=rs.getString( "number ");
subject=rs.getString( "subject ");
%>
<tr>
<td> <%=number%> </td>
</tr>
<tr>
<td> <%=subject%> </td>
</tr>
<tr>
<td> <input type= "text " id= "answer " name= "answer "/> </td>
</tr>
<%} %>
</table>
</br>
<input type= "Submit " value= "submit "/>
</form>
<body>
</body>
</html>
如果我有10条纪录,用户输入答案提交后,如何判断是否有空的答案?
如果有空的答案如何用 "error "填充?
[解决办法]
为什么不把
<td> <input type= "text " id= "answer " name= "answer "/> </td>
这一行改成
<%
i++;
String ans= " <td> <input type=\ "text\ " id=\ "answer "+i+ "\ " name=\ "answer "+i+ "\ "/> </td> "
%>
<%=ans%>
呢，这样只要在前面初始化一个int i=0;
就可以了。
这个时候，名字就不重复了
[解决办法]
对阿,用不同的ID就可以了
[解决办法]
不修改这样也可以
<SCRIPT>
function fnGetNames(){
// Returns a collection with 2 INPUT type=text elements.
var aInput=document.getElementsByName( "firstName ");
//按照从上向下的顺序就能够便利所有的name为firstName的text
alert(aInput[0].value);
alert(aInput[1].value);
}
</SCRIPT>
<INPUT TYPE= "text " NAME= "firstName ">
<INPUT TYPE= "text " NAME= "firstName ">
<INPUT TYPE= "button " VALUE= "Get Names " onclick= "fnGetNames() ">
[解决办法]
jackkui(键 之 舞 者) 说的对
Enumeration a = request.getParameterNames()
while(a.hasMoreElements())
{
String n=(String)a.nextElement();
if( "answer ".equals(n)){
String[] name=request.getParameterValues(n);
for(int i=0;i <name.length;i++)
{
out.print(name[i]+ " <br> ");
}
}}
