帮我看看错在哪里？

[mrrdh007]

我想通过一组按钮（3个）来动态改变select中的options？代码如下：
<script language="javascript" type="text/javascript">
<!--
var mm=new Array(3);
mm[0]=["00","01","02","03","04"];
mm[1]=["10","11"];
mm[2]=["20","21","22","23"];
function remove(sel)
{ for (var i=0;i<sel.options.length-1;i++)
sel.options[i]=null;
}
function addoptions(optionlist,sel)
{ var k=0;
var j=0;
remove(sel);
for(k=0;k<radiogroup.length;k++)
{ if (radiogroup[k].checked)
{
for(j=0;j<optionlist.length;j++)
sel[j]=new option(optionlist[j],optionlist[j]);
}
break;
}
}
//-->
</script>

<form name="form2" method="post" action=""margin="0">
<input type="radio" id="radiogroup"name="radiogroup" value="0"checked="checked" onclick="addoptions(mm[0],sel)">
<label for="radiogroup">0</label>
<input type="radio" id="radiogroup"name="radiogroup" value="1"onclick="addoptions(mm[1],sel)">
<label for="radiogroup">1</label>
<input type="radio" id="radiogroup"name="radiogroup" value="2"onclick="addoptions(mm[2],sel)">
<label for="radiogroup">2</label>
<select name="sel"style="position:relative;top:3px">
<option selectedvalue="0">00</option>
<option value="1">01</option>
<option value="2">02</option>
<option value="3">03</option>
<option value="4">04</option>
</select>

[mrrdh007]

用这个很好，但是将mm[i]的元素全换成汉字，就不行了
清空之后，就什么都没了，怎么会这样

[gzh_seagull]

你是不是写错了，不应该有这样的问题

[mrrdh007]

<script language="javascript" type="text/javascript">
<!--
var mm=new Array(3);
mm[0]=["动作片","科幻片","喜剧片","爱情片","恐怖片","连续剧","战争片","动画片","古装片","MTV","flash"];
mm[1]=["歌曲名","歌手名"];
mm[2]=["系统工具","实用工具","网络工具","媒体工具","娱乐工具"];

function addoptions(optionlist,sel)
{
var j=0;

sel.options.length=0;
for(j=0;j<optionlist.length;j++)
sel[j]=new Option(optionlist[j],optionlist[j]);
}
//-->
</script>

<form name="form2" method="post" action=""margin="0">
<input type="radio" name="radiogroup"
value="影视"checked="checked" onclick="addoptions(mm[0],sel)">
影视
<input type="radio" name="radiogroup"
value="音乐"onclick="addoptions(mm[1],sel)">
音乐
<input type="radio" name="radiogroup"
value="软件"onclick="addoptions(mm[2],sel)">
软件
<select name="sel"style="position:relative;top:3px">
<option selectedvalue="0">全部</option>
</select>
页面重载的时候，就显示一个“全部”，当单击单选纽时，就清空了，什么也没有

[gzh_seagull]

代码在我这里没有问题，可能是浏览器的问题，我用的是IE6

[mrrdh007]

谢谢你，好了，刚才只是我网页没有刷新
问个问题，function remove(sel)
{ for (var i=0;i<sel.options.length-1;i++)
sel.options[i]=null;
} 这个函数也应该可以清空吧？

[gzh_seagull]

sel.options.length-1 不用 -1

[mrrdh007]

在线等待，急啊！！

[gzh_seagull]

<script language="javascript" type="text/javascript">
<!--
var mm=new Array(3);
mm[0]=["00","01","02","03","04"];
mm[1]=["10","11"];
mm[2]=["20","21","22","23"];
function remove(sel)
{ for (var i=0;i<sel.options.length-1;i++)
sel.options[i]=null;
}
function addoptions(optionlist,sel)
{ var k=0;
var j=0;
remove(sel);
for(k=0;k<3;k++)
{ if (eval("form2.radiogroup"+k+".checked"))
{
for(j=0;j<optionlist.length;j++)
sel[j]=new Option(optionlist[j],optionlist[j]);
}
break;
}
}
//-->
</script>

<form name="form2" method="post" action=""margin="0">
<input type="radio" name="radiogroup0" value="0"checked="checked" onclick="addoptions(mm[0],sel)">
0
<input type="radio" name="radiogroup1" value="1"onclick="addoptions(mm[1],sel)">
1
<input type="radio" name="radiogroup2" value="2"onclick="addoptions(mm[2],sel)">
2
<select name="sel"style="position:relative;top:3px">
<option selectedvalue="0">00</option>
<option value="1">01</option>
<option value="2">02</option>
<option value="3">03</option>
<option value="4">04</option>
</select>

[mrrdh007]

to gzh_seagull(不可) ：
我说错了，是一组单选纽，name属性要一样啊

[gzh_seagull]

<script language="javascript" type="text/javascript">
<!--
var mm=new Array(3);
mm[0]=["00","01","02","03","04"];
mm[1]=["10","11"];
mm[2]=["20","21","22","23"];
function remove(sel)
{ for (var i=0;i<sel.options.length-1;i++)
sel.options[i]=null;
}
function addoptions(optionlist,sel)
{ var k=0;
var j=0;
remove(sel);

for(j=0;j<optionlist.length;j++)
sel[j]=new Option(optionlist[j],optionlist[j]);

}
//-->
</script>

<form name="form2" method="post" action=""margin="0">
<input type="radio" name="radiogroup" value="0"checked="checked" onclick="addoptions(mm[0],sel)">
0
<input type="radio" name="radiogroup" value="1"onclick="addoptions(mm[1],sel)">
1
<input type="radio" name="radiogroup" value="2"onclick="addoptions(mm[2],sel)">
2
<select name="sel"style="position:relative;top:3px">
<option selectedvalue="0">00</option>
<option value="1">01</option>
<option value="2">02</option>
<option value="3">03</option>
<option value="4">04</option>
</select>

[mrrdh007]

还是不行啊，点击第二个单旋钮时出毛病，把其它内容也加进来了

[gzh_seagull]

<script language="javascript" type="text/javascript">
<!--
var mm=new Array(3);
mm[0]=["00","01","02","03","04"];
mm[1]=["10","11"];
mm[2]=["20","21","22","23"];

function addoptions(optionlist,sel)
{ var k=0;
var j=0;
//remove(sel);
sel.options.length=0;

for(j=0;j<optionlist.length;j++)
sel[j]=new Option(optionlist[j],optionlist[j]);

}
//-->
</script>

<form name="form2" method="post" action=""margin="0">
<input type="radio" name="radiogroup" value="0"checked="checked" onclick="addoptions(mm[0],sel)">
0
<input type="radio" name="radiogroup" value="1"onclick="addoptions(mm[1],sel)">
1
<input type="radio" name="radiogroup" value="2"onclick="addoptions(mm[2],sel)">
2
<select name="sel"style="position:relative;top:3px">
<option selectedvalue="0">00</option>
<option value="1">01</option>
<option value="2">02</option>
<option value="3">03</option>
<option value="4">04</option>
</select>