<select name="mysel"></select>
下拉列表b
<select name="mytest">
<option value="1"> 1 </option>
<option value="2"> 2 </option>
<option value="3"> 3 </option>
</select>
<a href="#" onclick="AddOption()"> 我要添加列表?? </a>
<script language="javascript">
function AddOption()
{
document.getElementsByName("mysel")[0].innerHTML=document.getElementsByName("mytest")[0].innerHTML
//alert(document.getElementsByName("mysel")[0].innerHTML)
}
</script>
var oOption = document.createElement("OPTION");
oOption.text="法拉利";
oOption.value="4";
oSelect.add(oOption);
</SCRIPT>MS官方脚本
<script type="text/jscript">
function AddOption()
{
debugger
var oSelFrom=$("mytest");
var oSelTo=$("mysel");
for(var iCount=oSelFrom.options.length-1,i=iCount,thisOption=oSelFrom.options;i>=0;i--){
var newOption=new Option(thisOption[iCount-i].text,thisOption[iCount-i].value);
oSelTo.options.add(newOption);
}
}
function $(o){
return document.getElementById(o);
}
</script>
<div>
下拉列表a
<select name="mysel"></select>
下拉列表b
<select name="mytest">
<option value="1"> 1 </option>
<option value="2"> 2 </option>
<option value="3"> 3 </option>
</select>
<a href="javascript:AddOption()"> 我要添加列表选项 </a>
</div>