简单javascript问题求助！！！！一分钟就能挣20点！

<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>
<script language=javascript>
function myclick()
{
var o = document.getElementsByName("a1");
for(var i =0 ;i<o.length;++i)
{
if(o[i].checked)
{
alert(o[i].value);
}
}
}
</script>
<BODY>
<form name=frm>
<INPUT TYPE="radio" NAME="a1" value="1">aa
<INPUT TYPE="radio" NAME="a1" value="2">bb
<INPUT TYPE="button" value="确定" onclick="myclick();">
</form>
</BODY>
</HTML>可惜不是￥20

解决方案 »

  1.   

    function myclick()
    {
       alert(document.all.a1[0].value)
    }
      

  2.   

    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
    <HTML>
    <HEAD>
    <TITLE> New Document </TITLE>
    <META NAME="Generator" CONTENT="EditPlus">
    <META NAME="Author" CONTENT="">
    <META NAME="Keywords" CONTENT="">
    <META NAME="Description" CONTENT="">
    </HEAD>
    <script language=javascript>
    function myclick()
    {
    var aa=document.frm.a1[0].checked?document.frm.a1[0].value:document.frm.a1[1].value;
    window.alert(aa);
    }
    </script>
    <BODY>
    <form name=frm>
    <INPUT TYPE="radio" NAME="a1" value="1" checked>aa
    <INPUT TYPE="radio" NAME="a1" value="2">bb
    <INPUT TYPE="button" value="确定" onclick="myclick();">
    </form>
    </BODY>
    </HTML>