简单教程
提交运行
代码编辑器：
<script> function removeLastOption(){ var x=document.getElementById("mySelect"); if (x.length>0){ x.remove(x.length-1); } } </script> <form> <select id="mySelect"> <option>Apple</option> <option>Pear</option> <option>Banana</option> <option>Orange</option> </select> <input type="button" onclick="removeLastOption()" value="移除最后一个选项"> </form>
运行结果：