function removeOption(){
var x=document.getElementById("mySelect");
x.remove(x.selectedIndex);
</script>
</head>
<select id="mySelect">
<option>Apple</option>
<option>Pear</option>
<option>Banana</option>
<option>Orange</option>
</select>
<input type="button" onclick="removeOption()" value="移除选项">
</form>
</body>
</html>
尝试一下 »
从下拉列表中删除最后的选项
Select 对象