单选框问题（我点按钮一让页面上所有单选按钮值为1的选中，点按钮二让所有单选按钮为2的选中

楼上包不包括都可以我是这么写的但不行
function DX(iValue)
{
var oCBOpers = document.all.tags("INPUT");

for(i = 0; i < oCBOpers.length; i++)
{
var sID = oCBOpers.item(i).id;
if(sID.toUpperCase().indexOf("dx_") >= 0 )
{
if(oCBOpers.item(i).value == iValue)
{
oCBOpers.item(i).checked=true;
}
}
}
}

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

1 document.getElementsByTagName("input")
2 遍历，并判断 type == "radio"
3 继续处理LZ 把代码贴出来，帮你改改！
LZ 把 HTML 代码贴出来！
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>123</title>
  <script type="text/javascript">
    function selectall(){
var boxs = document.getElementsByName('sel');
if (document.getElementById('all').checked){
for (var i=0;i<boxs.length;i++){
boxs[i].checked = true;
}
}else{
for (var i=0;i<boxs.length;i++){
boxs[i].checked = false;
}
}
}
  </script>
</head><body>
   select all<input type=checkbox id="all"  onclick="selectall();"><br>
   <input type=checkbox name=sel>
   <input type=checkbox name=sel>
   <input type=checkbox name=sel>
   <input type=checkbox name=sel>
   <input type=checkbox name=sel>
   <input type=checkbox name=sel>
</body>
</html>
example:<input type="radio" name="r1" value="1">
<input type="radio" name="r2" value="1">
<input type="radio" name="r3" value="1">
<input type="radio" name="r11" value="2">
<input type="radio" name="r22" value="2">
<input type="radio" name="r33" value="2">
<input type="button" value="选择1" onclick="selectRadio(1)"/>
<input type="button" value="选择2" onclick="selectRadio(2)"/>
<script language="JavaScript">

</script>
<script>
function _check(intValue){
var radioObj = document.getElementsByTagName("input");
for (i=0;i<radioObj.length;i++){
if (radioObj[i].type == "radio"){
if (radioObj[i].value == intValue){
radioObj[i].checked = true;
}else{
radioObj[i].checked = false;
}
}
}
}
</script>
<body>
<INPUT TYPE="radio" NAME="" value="1">1
<INPUT TYPE="radio" NAME="" value="1">1
<INPUT TYPE="radio" NAME="" value="1">1
<INPUT TYPE="radio" NAME="" value="1">1
<INPUT TYPE="radio" NAME="" value="1">1
<INPUT TYPE="radio" NAME="" value="1">1
<INPUT TYPE="radio" NAME="" value="1">1
<INPUT TYPE="radio" NAME="" value="2">2
<INPUT TYPE="radio" NAME="" value="2">2
<INPUT TYPE="radio" NAME="" value="2">2
<INPUT TYPE="radio" NAME="" value="2">2
<INPUT TYPE="radio" NAME="" value="1">1
<INPUT TYPE="radio" NAME="" value="2">2
<INPUT TYPE="radio" NAME="" value="2">2
<INPUT TYPE="button" value="单选1" onclick="_check(1);"><INPUT TYPE="button" value="单选2" onclick="_check(2);">
</body>
改chouchy的~<script language="JavaScript">

</script>