<select onchange="clearItems(this)">
<option value=a >aaa</option>
<option value=b>bbb</option>
<option value=c>ccc</option>
<option value=d>ddd</option>
</select>
<script>
function clearItems(obj)
{
var len = obj.options.length;
for (i=0;i<len;i++)
{
obj.options.remove(0);
}
}
</script>
<option value=a >aaa</option>
<option value=b>bbb</option>
<option value=c>ccc</option>
<option value=d>ddd</option>
</select>
<script>
function clearItems(obj)
{
var len = obj.options.length;
for (i=0;i<len;i++)
{
obj.options.remove(0);
}
}
</script>
function clearItem()
{
window.select1.innerHTML=""
}
</script>
<option value="">请选择
<option value="1">item1
<option value="2">item2
</select>
<script>
function bao(element)
{
//功能:选中后,清除其余未选中的选项.
var selops = new Option(element.innerText,element.value);
var sel = document.all.sel;
sel.options.length = 0;
sel.options[sel.options.length] = selops;
}
</script>
不知道你什么想法,清空了数据,select还有什么意义?
选错了怎么办?