急求单选项和文本输入框的控制问题

1.document.forms[n].组名.length 属性可以确定单选按钮数。
2.document.forms[n].组名[n].checked属性可以检查是否有单选定按钮被选中
3.把一和二放在循环里,然后加上
document.表单名.文本框名.value=被选中的radio的value

解决方案 »

免费领取超大流量手机卡，每月29元包185G流量+100分钟通话, 中国电信官方发货

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>无标题文档</title>
<script language="JavaScript" type="text/JavaScript">function change(){
var u=0
var a=document.getElementsByName("radio1")
for(i=0;i<a.length;i++)
{

  if(a[i].checked){u=a[i].value}
}switch(parseInt(u)){
case 1:
document.bgColor="#ff0000"
break;
case 2:
document.bgColor="#ffff00"
break;
case 3:
document.bgColor="#00ff33"
break;
}}</script></head><body><form action="" method="post" name="form1">
<input name="radio1" type="radio" value="1">a
<input name="radio1" type="radio" value="2">b
<input name="radio1" type="radio" value="3">c
<input name="button" type="button" onClick="change()" value="change1">
</form>
</body>
</html>
<html><head>
<link href="tree_style.css" rel="stylesheet" type="text/css">
<script language="JavaScript">

    </script>
<title>增加文件节目对应关系</title>
</head>
<body topmargin="0" leftmargin="0">
<center><table border="0" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" width="308" id="AutoNumber2">
  <tr>
    <td width="308"><b><span lang="zh-cn">增加内容</span></b></td>
  </tr>
  <tr>
    <td width="308">　</td>
  </tr>
  <tr>
    <td width="308">
    <form method="POST" action="t_Program_File_R_insert.asp">
    <table border="1" cellpadding="0" cellspacing="0" id=m style="border-collapse: collapse" bordercolor="#111111" width="100%" id="AutoNumber3" height="72">

      <tr>
        <td width="100%" height="14" colspan="3"></td>
      </tr>
      <tr>
        <td width="33%" height="14">全文件标志<span lang="zh-cn">：</span></td>
        <td width="27%" height="14">
        <input type="radio" value="1" name="AllFileFlag_1" onclick="document.all.m.rows[this.parentElement.parentElement.rowIndex+1].style.display='none'"><span lang="zh-cn">隐藏</span></td>
        <td width="40%" height="14">
        <input type="radio" value="0" name="AllFileFlag_1" checked onclick="document.all.m.rows[this.parentElement.parentElement.rowIndex+1].style.display=''"><span lang="zh-cn">显示</span></td>
      </tr>
      <tr>
        <td width="33%" height="14"><span lang="zh-cn">内容</span></td>
        <td width="67%" height="14" colspan="2">
        <input type="text" name="InPoint_1" size="13" value="显示内容"></td>
      </tr>
      <tr>
        <td width="100%" height="14" colspan="3">
        <p align="center"><input type="submit" value="[确定]" name="B1"><span lang="zh-cn">   
        </span></td>
      </tr>
    </table>
    </form>
    </td>
  </tr>
</table>
</center></body></html>
<html>
<body>
<script>
function hideorshow(oSource,strKey)
{ var strHide = (oSource.checked) ? "none" : ""; var oArr  = document.getElementsByName(strKey); if(oArr != null)
{
for(var i = 0; i < oArr.length;i++)
{
oArr[i].style.display = strHide;
}
}
}
</script>
<form name="form1" method="post" action="">
  <p>
    <input type="checkbox" name="checkbox" value="checkbox" onclick="hideorshow(this,'c2')">
    初二
    <input type="checkbox" name="checkbox2" value="checkbox" onclick="hideorshow(this,'c3')">
    初三
    <input type="checkbox" name="checkbox3" value="checkbox" onclick="hideorshow(this,'g1')">
    高一 </p>
</form>
<table width="300" border="1">
  <tr>
    <td width="40"> 年级</td>
    <td width="75">姓名</td>
    <td width="163">总分</td>
  </tr>
  <tr id="c2">
    <td width="40">初二</td>
    <td width="75">李A</td>
    <td width="163">600</td>
  </tr>
  <tr id="g1">
    <td>高一</td>
    <td>张B</td>
    <td>680</td>
  </tr>
  <tr id="c2">
    <td>初二</td>
    <td>小王</td>
    <td>500</td>
  </tr>
  <tr id=c3>
    <td>初三</td>
    <td>李小</td>
    <td>800</td>
  </tr>
  <tr id=g1>
    <td>高一 </td>
    <td>小兰</td>
    <td>800</td>
  </tr>
</table>
</body>
</html>
http://expert.csdn.net/Expert/topic/2362/2362004.xml?temp=.8865015
你可以参考一下.