问题多多~~单击按钮后往select中加一项，为什么form提交后看不到这个select的值

Question

要
Request("LU",i)
i是多選的序號!

Answer 1

Request什么意思，jscript的函数吗？

Answer 2

<select id="select" class='select' name='LU' size='5' multiple onchange="alert(this.options[selectedIndex].value)">
</select><script>
var select_obj=document.getElementById("select");
for(var i=1;i<31;i++){
str=i.toString();
if(i<10)
str="0"+str;
var select_option=new Option(str,str);
select_obj.options.add(select_option);
select_obj.selectedIndex=0;
}
alert(select_obj.options[select_obj.selectedIndex].value);
</script>

Answer 3

<select id="select" class='select' name='LU' size='5' multiple onchange="alert(this.options[selectedIndex].value)">
</select>
<input type=button value="add" onclick="javascript:add()"><script>
var flag=0
function add()
{
if(flag<10)
var j="0"+flag.toString();
b=document.getElementById("select");  
var opt=new Option(j,j,true,true)
b.options[b.options.length] =opt
flag++
b.selectedIndex=0;
}
</script>