请问一下怎么获取单选按钮的值?
Jsbug 2006-11-01 04:24:09 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>无标题文档</title>
<script>
function getvalue()
{
window.opener.document.form1.blogername.value = window.document.form1.radiobutton.checked.value;
window.close();
window.opener.reload();
}
</script>
</head>
<body>
<form name="form1" method="post" action="">
<p>
<input type="radio" name="radiobutton" value="1">1
<input type="radio" name="radiobutton" value="2">2
<input type="radio" name="radiobutton" value="3">3
<input type="radio" name="radiobutton" value="4">4
<input type="radio" name="radiobutton" value="5">5
<input name="Input" type="submit" onClick="getvalue()" value="提交">
</p>
</form>
</body>
</html>
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window.document.form1.radiobutton.checked.value 怎么获取无效啊