请大家帮我看看我的复选框判断~没头绪了~谢谢了
我这是图书馆查询页面，里面有复选框和单选按钮，查询提交时无论单选或多选至少选一个，就是如果不选单选就要有一个复选，如果复选不选就要有一个单选~代码如下：
<%@LANGUAGE= "VBSCRIPT " CODEPAGE= "936 "%>
<meta http-equiv= "Content-Type " content= "text/html; charset=gb2312 ">
<title> 书籍查询 </title>
<link href= "css/yangshi.css " rel= "stylesheet " type= "text/css ">
<style type= "text/css ">
<!--
.style8 {color: #FF0000}
-->
</style>
<script language= "javascript ">
function checkvalue(theform)
{
for(j=0;j <theform.checkbox.length;j++)
if(theform.checkbox(i).checked==true)
{
break;
}
for(i=0;i <theform.radiobutton.length;i++)
if (theform.radiobutton[i].checked==true)
{
break;
}
if (i==theform.radiobutton.length)
{
alert( "您没选择任何查询项目 ");
return false;
}
return (true);
}
</script>
<!--#include file= "top.asp "-->
<table width= "75% " border= "0 " align= "center ">
<tr>
<td height= "27 " class= "style4 "> <div align= "center "> 书目查询 </div> </td>
</tr>
</table>
<table width= "75% " border= "0 " align= "center ">
<tr>
<td> <span class= "style1 "> </span> 在这里，您可以对 </span> <span class= "style8 "> 本馆图书 </span> 进行分类及详细查询 </td>
</tr>
</table>
<form name= "form1 " method= "post " action= "ac_booksearch.asp " >
<table width= "68% " height= "232 " border= "0 " align= "center ">
<tr>
<td colspan= "2 " > <span class= "style6 "> 1.请选择查询路径 </span> </td>
</tr>
<tr >
<td width= "15% "> </td>
<td width= "85% " > <input name= "radiobutton " type= "radio " value= "1 ">
<span class= "style7 "> 编号 </span>
<span class= "style7 "> <input name= "booknum " type= "text " id= "booknum ">
</span> </td>
</tr>
<tr>
<td> </td>
<td > <input type= "radio " name= "radiobutton " value= "2 ">
<span class= "style7 "> 书名
<input name= "bookname " type= "text " id= "bookname ">
</span> </td>
</tr>
<tr >
<td> </td>
<td class= "style7 "> <input type= "checkbox " name= "checkbox " value= "4 ">
<span class= "style7 "> 内容
<input name= "content " type= "text " id= "content ">
<input type= "checkbox " name= "checkbox " value= "5 ">
作者
</span>
<input name= "author " type= "text " id= "writer "> </td>
</tr>
<tr>
<td> </td>
<td > <input type= "radio " name= "radiobutton " value= "3 ">
<span class= "style7 "> 书籍分类
<select name= "bookclass " id= "bookclass ">
<option value= "1 " selected> 马列主义、毛泽东思想、邓小平理论 </option>
<option value= "2 "> 社会科学 </option>
<option value= "3 "> 自然科学 </option>
<option value= "4 "> 法律、哲学 </option>
</select>
</span> </td>
</tr>
<tr>
<td> <span class= "style6 "> 2.出版时间 </span> </td>
<td> <input name= "starttime " type= "text " id= "starttime ">
<span class= "style7 ">
年-- </span>
<input name= "endtime " type= "text " id= "endtime ">
<span class= "style7 "> 年 (可不填) </span> </td>
</tr>
<tr>
<td class= "style6 "> 3.每页显示条数 </td>
<td> <span class= "style7 "> <select name= "rcperpage " class= "style7 " id= "rcperpage ">
<option value= "5 "> 5 </option>
<option value= "10 "> 10 </option>
<option value= "15 "> 15 </option>
</select>
条 </span> </td>
</tr>
<tr>
<td height= "21 "> </td>
<td> </td>
</tr>
<tr align= "center ">
<td height= "42 " colspan= "2 "> <input type= "submit " name= "submit " value= "查询 " onClick= "javascript:checkvalue(this.form) ">
<input type= "reset " name= "reset " value= "重填 "> </td>
</tr>
</table>
</form>
[解决办法]
<html>
<head>
<meta http-equiv= "Content-Type " content= "text/html; charset=gb2312 ">
<title> Write The Codes By Myself </title>
<style type= "text/css ">
<!--
.style8 {color: #FF0000}
-->
</style>
<script language= "javascript ">
function checkvalue(theform)
{
for(j=0;j <theform.checkbox.length;j++)
if(theform.checkbox[j].checked==true)
{
break;
}
for(i=0;i <theform.radiobutton.length;i++)
if (theform.radiobutton[i].checked==true)
{
break;
}
if (i==theform.radiobutton.length && j==theform.checkbox.length)
{
alert( "您没选择任何查询项目 ");
return false;
}
return (true);
}
</script>
</head>
<body>
<table width= "75% " border= "0 " align= "center ">
<tr>
<td height= "27 " class= "style4 "> <div align= "center "> 书目查询 </div> </td>
</tr>
</table>
<table width= "75% " border= "0 " align= "center ">
<tr>
<td> <span class= "style1 "> </span> 在这里，您可以对 </span> <span class= "style8 "> 本馆图书 </span> 进行分类及详细查询 </td>
</tr>
</table>
<form name= "form1 " method= "post " action= "ac_booksearch.asp " onsubmit= "javascript:return checkvalue(this); ">
<table width= "68% " height= "232 " border= "0 " align= "center ">
<tr>
<td colspan= "2 " > <span class= "style6 "> 1.请选择查询路径 </span> </td>
</tr>
<tr >
<td width= "15% "> </td>
<td width= "85% " > <input name= "radiobutton " type= "radio " value= "1 ">
<span class= "style7 "> 编号 </span>
<span class= "style7 "> <input name= "booknum " type= "text " id= "booknum ">
</span> </td>
</tr>
<tr>
<td> </td>
<td > <input type= "radio " name= "radiobutton " value= "2 ">
<span class= "style7 "> 书名
<input name= "bookname " type= "text " id= "bookname ">
</span> </td>
</tr>
<tr >
<td> </td>
<td class= "style7 "> <input type= "checkbox " name= "checkbox " value= "4 ">
<span class= "style7 "> 内容
<input name= "content " type= "text " id= "content ">
<input type= "checkbox " name= "checkbox " value= "5 ">
作者
</span>
<input name= "author " type= "text " id= "writer "> </td>
</tr>
<tr>
<td> </td>
<td > <input type= "radio " name= "radiobutton " value= "3 ">
<span class= "style7 "> 书籍分类
<select name= "bookclass " id= "bookclass ">
<option value= "1 " selected> 马列主义、毛泽东思想、邓小平理论 </option>
<option value= "2 "> 社会科学 </option>
<option value= "3 "> 自然科学 </option>
<option value= "4 "> 法律、哲学 </option>
</select>
</span> </td>
</tr>
<tr>
<td> <span class= "style6 "> 2.出版时间 </span> </td>
<td> <input name= "starttime " type= "text " id= "starttime ">
<span class= "style7 ">
年-- </span>
<input name= "endtime " type= "text " id= "endtime ">
<span class= "style7 "> 年 (可不填) </span> </td>
</tr>
<tr>
<td class= "style6 "> 3.每页显示条数 </td>
<td> <span class= "style7 "> <select name= "rcperpage " class= "style7 " id= "rcperpage ">
<option value= "5 "> 5 </option>
<option value= "10 "> 10 </option>
<option value= "15 "> 15 </option>
</select>
条 </span> </td>
</tr>
<tr>
<td height= "21 "> </td>
<td> </td>
</tr>
<tr align= "center ">
<td height= "42 " colspan= "2 "> <input type= "submit " name= "submit " value= "查询 " >
<input type= "reset " name= "reset " value= "重填 "> </td>
</tr>
</table>
</form>
</body>
</html>
[解决办法]
不会的啊,
没有问题的啊
